Annual report pursuant to Section 13 and 15(d)

Statements of Redeemable Convertible Preferred Stock

v2.4.1.9
Statements of Redeemable Convertible Preferred Stock (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Preferred stock value, Beginning Balance $ 118,671us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests $ 109,345us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests $ 83,122us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
Warrants exercised 593ingn_WarrantsConvertedToTemporaryEquityValue 2,048ingn_WarrantsConvertedToTemporaryEquityValue 442ingn_WarrantsConvertedToTemporaryEquityValue
Accretion of Series G financing costs     55us-gaap_TemporaryEquityAccretionOfInterest
Deemed dividend on redeemable convertible preferred stock 987us-gaap_TemporaryEquityAccretionOfDividends 7,278us-gaap_TemporaryEquityAccretionOfDividends 5,781us-gaap_TemporaryEquityAccretionOfDividends
Conversion of preferred stock to common stock in connection with initial public offering (120,251)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities    
Preferred stock value, Ending Balance   118,671us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests 109,345us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
Series B Preferred Stock      
Preferred stock share, Beginning Balance 425,511us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
  423,082us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Warrants exercised, shares     2,429ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (425,511)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Preferred stock share, Ending Balance     425,511us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Preferred stock value, Beginning Balance 5,056us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
  5,026us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Warrants exercised     30ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (5,056)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
   
Preferred stock value, Ending Balance     5,056us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Series C Preferred Stock      
Preferred stock share, Beginning Balance 365,903us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  343,848us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Warrants exercised, shares 11,094ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  22,055ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (376,997)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
   
Preferred stock share, Ending Balance     365,903us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Preferred stock value, Beginning Balance 6,460us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  6,048us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Warrants exercised 279ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
  412ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (6,739)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
   
Preferred stock value, Ending Balance     6,460us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Series D Preferred Stock      
Preferred stock share, Beginning Balance 1,573,126us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
1,487,225us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
1,487,225us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Warrants exercised, shares 11,415ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
85,901ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
0ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (1,584,541)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
   
Preferred stock share, Ending Balance   1,573,126us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
1,487,225us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Preferred stock value, Beginning Balance 34,619us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
32,571us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
32,571us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Warrants exercised 314ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
2,048ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
0ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (34,933)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
   
Preferred stock value, Ending Balance   34,619us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
32,571us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Series E Preferred Stock      
Preferred stock share, Beginning Balance 1,634,874us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
1,634,874us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
1,634,874us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Warrants exercised, shares     0ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (1,634,874)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
   
Preferred stock share, Ending Balance   1,634,874us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
1,634,874us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Preferred stock value, Beginning Balance 29,130us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
28,044us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
26,925us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Warrants exercised     0ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Deemed dividend on redeemable convertible preferred stock 139us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
1,086us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
1,119us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (29,269)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
   
Preferred stock value, Ending Balance   29,130us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
28,044us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
Series F Preferred Stock      
Preferred stock share, Beginning Balance 2,701,957us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
2,701,957us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
2,701,957us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Warrants exercised, shares     0ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (2,701,957)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
   
Preferred stock share, Ending Balance   2,701,957us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
2,701,957us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Preferred stock value, Beginning Balance 15,620us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
14,055us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
12,552us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Warrants exercised     0ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Deemed dividend on redeemable convertible preferred stock 207us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
1,565us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
1,503us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (15,827)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
   
Preferred stock value, Ending Balance   15,620us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
14,055us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesFPreferredStockMember
Series G Preferred Stock      
Preferred stock share, Beginning Balance 2,840,260us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
2,840,260us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
 
Warrants exercised, shares     0ingn_WarrantsConvertedToTemporaryEquityShares
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering, shares (2,840,260)us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
   
Preferred stock share, Ending Balance   2,840,260us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
2,840,260us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
Preferred stock value, Beginning Balance 27,786us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
23,159us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
 
Warrants exercised     0ingn_WarrantsConvertedToTemporaryEquityValue
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
Accretion of Series G financing costs     55us-gaap_TemporaryEquityAccretionOfInterest
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
Deemed dividend on redeemable convertible preferred stock 641us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
4,627us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
3,159us-gaap_TemporaryEquityAccretionOfDividends
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
Conversion of preferred stock to common stock in connection with initial public offering (28,427)us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecurities
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
   
Preferred stock value, Ending Balance   $ 27,786us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember
$ 23,159us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesGPreferredStockMember