Annual report pursuant to Section 13 and 15(d)

Business Acquisitions and Related Transactions - Additional Information (Details)

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Business Acquisitions and Related Transactions - Additional Information (Details) - USD ($)
 1 Months Ended 12 Months Ended
Dec. 31, 2021
Jan. 31, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]          
Fair value of consideration     $ 3,461,000 $ 1,251,000  
Goodwill, net $ 71,157,000   71,157,000 $ 58,714,000 $ 58,414,000
Plug Smart          
Business Acquisition [Line Items]          
Fair value of consideration 21,240,000   21,240,000    
Initial cash payment 17,692,000        
Measurement period adjustment, hold back contingency 750,000        
Long-term operating lease liabilities, net of current portion 2,160,000   2,160,000    
Contingent consideration $ 2,160,000   2,160,000    
Contingent consideration, liability, revenue targets, period 5 years        
Cash and cash equivalents $ 2,771,000   2,771,000    
Debt assumed 0        
Goodwill, net 12,499,000   12,499,000    
Maximum cumulative earn-out $ 5,000,000   $ 5,000,000    
Massachusetts Based Solar Operations And Maintenance Firm          
Business Acquisition [Line Items]          
Fair value of consideration   $ 1,294,000     1,294,000
Cash and cash equivalents         0
Debt assumed   $ 0      
Goodwill, net         $ 337,000