Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Schedule of Long-Term Debt (Details)

v2.4.1.9
Long-Term Debt - Schedule of Long-Term Debt (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Long term debt $ 614us-gaap_LongTermDebt $ 10,649us-gaap_LongTermDebt
Subtotal 614us-gaap_LongTermDebt 10,649us-gaap_LongTermDebt
Less: current maturities (299)us-gaap_LongTermDebtCurrent (5,258)us-gaap_LongTermDebtCurrent
Long-term debt, net of current portion 315us-gaap_LongTermDebtNoncurrent 5,391us-gaap_LongTermDebtNoncurrent
May 2011 Through April 2014 | Term Loan A    
Debt Instrument [Line Items]    
Long term debt   417us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughAprilTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermALoanMember
Subtotal   417us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughAprilTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermALoanMember
May 2012 Through April 2015 | Term Loan B    
Debt Instrument [Line Items]    
Long term debt   3,778us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandTwelveThroughAprilTwoThousandFifteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermBLoanMember
Subtotal   3,778us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandTwelveThroughAprilTwoThousandFifteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermBLoanMember
November 2013 Through May 2014 | Term Loan C    
Debt Instrument [Line Items]    
Long term debt   5,666us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_NovemberTwoThousandThirteenThroughMayTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermCLoanMember
Subtotal   5,666us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_NovemberTwoThousandThirteenThroughMayTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_TermCLoanMember
May 2011 Through October 2014 | Contractual Obligation    
Debt Instrument [Line Items]    
Long term debt 614us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughOctoberTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_ContractualObligationMember
788us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughOctoberTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_ContractualObligationMember
Subtotal $ 614us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughOctoberTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_ContractualObligationMember
$ 788us-gaap_LongTermDebt
/ us-gaap_DebtInstrumentAxis
= ingn_MayTwoThousandElevenThroughOctoberTwoThousandFourteenMember
/ us-gaap_LongtermDebtTypeAxis
= ingn_ContractualObligationMember