Annual report pursuant to Section 13 and 15(d)

Balance Sheets (Parenthetical)

v2.4.1.9
Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Allowances for accounts receivable $ 3,745us-gaap_AllowanceForDoubtfulAccountsReceivable $ 3,390us-gaap_AllowanceForDoubtfulAccountsReceivable
Allowances for inventories 141us-gaap_InventoryValuationReserves 100us-gaap_InventoryValuationReserves
Allowances for rental equipment 832ingn_RentalEquipmentAllowance 157ingn_RentalEquipmentAllowance
Preferred stock, par value $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 10,000,000us-gaap_PreferredStockSharesAuthorized 100,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 66,666us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 66,666us-gaap_PreferredStockSharesOutstanding
Preferred stock, Liquidation preference 0us-gaap_PreferredStockLiquidationPreferenceValue 250us-gaap_PreferredStockLiquidationPreferenceValue
Common stock, par value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 200,000,000us-gaap_CommonStockSharesAuthorized 60,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 19,059,364us-gaap_CommonStockSharesIssued 280,974us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 19,059,364us-gaap_CommonStockSharesOutstanding 280,974us-gaap_CommonStockSharesOutstanding
Redeemable convertible preferred stock    
Preferred stock, par value $ 0.001us-gaap_TemporaryEquityParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
$ 0.001us-gaap_TemporaryEquityParOrStatedValuePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Preferred stock, shares authorized   10,000,000us-gaap_TemporaryEquitySharesAuthorized
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Preferred stock, shares issued 0us-gaap_TemporaryEquitySharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
9,541,631us-gaap_TemporaryEquitySharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Preferred stock, shares outstanding 0us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
9,541,631us-gaap_TemporaryEquitySharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
Preferred stock, Liquidation preference $ 0us-gaap_TemporaryEquityLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember
$ 136,660us-gaap_TemporaryEquityLiquidationPreference
/ us-gaap_StatementClassOfStockAxis
= us-gaap_RedeemableConvertiblePreferredStockMember