Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Summary of Intangible Assets (Details)

v2.4.1.9
Intangible Assets - Summary of Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 2 years  
Gross carrying amount $ 1,186us-gaap_FiniteLivedIntangibleAssetsGross $ 981us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated amortization 916us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization 766us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Net amount 270us-gaap_FiniteLivedIntangibleAssetsNet 215us-gaap_FiniteLivedIntangibleAssetsNet
Licenses    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 10 years 10 years
Gross carrying amount 185us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
185us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
Accumulated amortization 81us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
63us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
Net amount 104us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
122us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_LicensesMember
Patents And Websites    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 5 years 5 years
Gross carrying amount 873us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
723us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
Accumulated amortization 749us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
662us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
Net amount 124us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
61us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_PatentsAndWebsitesMember
Commercial    
Finite Lived Intangible Assets [Line Items]    
Estimated useful life of intangible asset 2 years 2 years
Gross carrying amount 128us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember
73us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember
Accumulated amortization 86us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember
41us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember
Net amount $ 42us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember
$ 32us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= ingn_CommercialMember