XML 16 R48.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Accounts Receivable    
Minimum number of days after an invoice is issued when accounts receivable is considered due 30 days  
Maximum number of days after an invoice is issued when accounts receivable is considered due 60 days  
Number of days past due when accounts receivable are considered delinquent 90 days  
Allowance for doubtful accounts receivable $ 0us-gaap_AllowanceForDoubtfulAccountsReceivable $ 0us-gaap_AllowanceForDoubtfulAccountsReceivable
Inventory    
Inventory on consignment 1,611,000us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment 1,178,000us-gaap_OtherInventoryMaterialsSuppliesAndMerchandiseUnderConsignment
Revenue Recognition    
Minimum term of extended warranty contracts sold 5 years  
Maximum term of extended warranty contracts sold 10 years  
Deferred product and service revenues 11,800,000us-gaap_DeferredRevenue 9,000,000us-gaap_DeferredRevenue
Leased Property Under Capital Lease    
Amortization period of capital lease 6 years  
Amortization expense of property under capital leases 516,486us-gaap_AmortizationOfLeasedAsset 516,487us-gaap_AmortizationOfLeasedAsset
Minimum    
Intangible Assets    
Intangible asset useful lives 5 years  
Research and Development Contracts    
Cost Sharing Percentages of research and development contracts 0.30plug_CostSharingPercentagesOfTotalProjectCostsOfResearchAndDevelopmentContracts
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
 
Sale-leaseback transactions    
Lease Term 5 years  
Maximum    
Intangible Assets    
Intangible asset useful lives 10 years  
Research and Development Contracts    
Cost Sharing Percentages of research and development contracts 0.50plug_CostSharingPercentagesOfTotalProjectCostsOfResearchAndDevelopmentContracts
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
 
Sale-leaseback transactions    
Lease Term 6 years  
Products and Services Arrangements    
Revenue Recognition    
Unbilled amounts 616,000us-gaap_UnbilledReceivablesCurrent
/ us-gaap_ProductOrServiceAxis
= plug_ProductsAndServicesArrangementsMember
184,000us-gaap_UnbilledReceivablesCurrent
/ us-gaap_ProductOrServiceAxis
= plug_ProductsAndServicesArrangementsMember
Research and Development Contracts    
Revenue Recognition    
Unbilled amounts $ 1,047,000us-gaap_UnbilledReceivablesCurrent
/ us-gaap_ProductOrServiceAxis
= plug_ResearchAndDevelopmentContractsMember
$ 111,000us-gaap_UnbilledReceivablesCurrent
/ us-gaap_ProductOrServiceAxis
= plug_ResearchAndDevelopmentContractsMember
Buildings.    
Property, Plant and Equipment.    
Estimated useful life 20 years  
Building improvements | Minimum    
Property, Plant and Equipment.    
Estimated useful life 5 years  
Building improvements | Maximum    
Property, Plant and Equipment.    
Estimated useful life 20 years  
Software, machinery and equipment | Minimum    
Property, Plant and Equipment.    
Estimated useful life 1 year  
Software, machinery and equipment | Maximum    
Property, Plant and Equipment.    
Estimated useful life 15 years