Quarterly report pursuant to Section 13 or 15(d)

Investment Funds and Equity Method Investments - Schedule of Variable Interest Entity Financial Information (Details)

v3.21.1
Investment Funds and Equity Method Investments - Schedule of Variable Interest Entity Financial Information (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Variable Interest Entity [Line Items]    
Variable interest entities, current assets [1] $ 485,779 $ 490,715
Total assets [1] 1,848,749 1,750,251
Variable interest entities, current liabilities [1] 351,582 383,097
Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 10,142 10,935
Total assets 159,136 162,198
Variable interest entities, current liabilities 2,961 3,758
Total VIE liabilities 32,614 33,335
Cash and cash equivalents | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 5,691 5,828
Restricted cash | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 2,438 3,185
Accounts receivable, net | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 592 834
Costs and estimated earnings in excess of billings | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 1,331 968
Prepaid expenses and other current assets | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current assets 90 120
Property and equipment, net | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent assets 1,266 1,266
Energy assets, net | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent assets 140,881 143,133
Operating lease assets | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent assets 6,394 6,439
Other assets | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent assets 453 425
Current portions of long-term debt and financing lease liabilities | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current liabilities 2,215 2,230
Accounts payable | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current liabilities 150 311
Accrued expenses and other current liabilities | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current liabilities 466 1,092
Current portions of operating lease liabilities | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, current liabilities 130 125
Long-term debt and financing lease liabilities, net of current portion, unamortized discount and debt issuance costs | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent liabilities 22,391 22,822
Long-term operating lease liabilities, net of current portion | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent liabilities 6,195 6,220
Other liabilities | Variable Interest Entity, Primary Beneficiary    
Variable Interest Entity [Line Items]    
Variable interest entities, noncurrent liabilities $ 1,067 $ 535
[1] Includes restricted assets of consolidated variable interest entities (“VIEs”) at March 31, 2021 and December 31, 2020 of $159,136 and $162,198, respectively. Includes non-recourse liabilities of consolidated VIEs at March 31, 2021 and December 31, 2020 of $32,614 and $33,335, respectively. See Note 12.