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DESCRIPTION OF BUSINESS (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended
Mar. 09, 2015
Mar. 31, 2015
Class of Stock [Line Items]    
Number of shares sold 34,369,675us-gaap_StockIssuedDuringPeriodSharesNewIssues  
Proceeds from issuance of shares $ 12,500us-gaap_ProceedsFromIssuanceOfCommonStock $ 12,529us-gaap_ProceedsFromIssuanceOfCommonStock
March Investor Warrants [Member]    
Class of Stock [Line Items]    
Number of shares called by warrants 34,369,675us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= nspr_MarchInvestorWarrantsMember
34,369,675us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_ClassOfWarrantOrRightAxis
= nspr_MarchInvestorWarrantsMember
Warrant term 5 years  
Warrant exercise price $ 0.55us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= nspr_MarchInvestorWarrantsMember
$ 0.55us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
/ us-gaap_ClassOfWarrantOrRightAxis
= nspr_MarchInvestorWarrantsMember