Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Cash and cash equivalents (including amounts in VIEs of $1,255 and $444, respectively) $ 61,397 $ 24,262
Restricted cash (including amounts in VIEs of $156 and $155, respectively) 16,880 15,751
Accounts receivable, net (including amounts in VIEs of $374 and $328, respectively) 85,985 85,121
Costs and estimated earnings in excess of billings (including amounts in VIEs of $498 and $360, respectively) 86,842 104,852
Prepaid expenses and other current assets (including amounts in VIEs of $190 and $8, respectively) 11,571 14,037
Energy assets, net (including amounts in VIEs of $122,641 and $55,712, respectively) 459,952 356,443
Other assets (including amounts in VIEs of $1,613 and $1,398, respectively) 29,394 27,635
Current portions of long-term debt and capital lease liabilities (including amounts in VIEs of $1,712 and $0, respectively) 26,890 22,375
Accounts payable (including amounts in VIEs of $234 and $764, respectively) 134,330 135,881
Accrued expenses and other current liabilities (including amounts in VIEs of $4,233 and $149, respectively) 35,947 23,260
Long-term debt and capital lease liabilities, less current portions and net of deferred financing fees (including amounts in VIEs of $26,461 and $0, respectively) 219,162 173,237
Other liabilities (including amounts in VIEs of $2,131 and $0, respectively) $ 29,212 $ 18,754
Preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Treasury stock, shares (in shares) 2,091,040 1,873,266
Class A Common Stock    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 500,000,000 500,000,000
Common stock, shares issued (in shares) 30,366,546 29,406,315
Common stock, shares outstanding (in shares) 28,275,506 27,533,049
Class B Common Stock    
Common stock, par value (in dollars per share) $ 0.0001 $ 0.0001
Common stock, shares authorized (in shares) 144,000,000 144,000,000
Common stock, shares issued (in shares) 18,000,000 18,000,000
Common stock, shares outstanding (in shares) 18,000,000 18,000,000
Variable Interest Entity    
Cash and cash equivalents (including amounts in VIEs of $1,255 and $444, respectively) $ 1,255 $ 444
Restricted cash (including amounts in VIEs of $156 and $155, respectively) 156 155
Accounts receivable, net (including amounts in VIEs of $374 and $328, respectively) 374 328
Costs and estimated earnings in excess of billings (including amounts in VIEs of $498 and $360, respectively) 498 360
Prepaid expenses and other current assets (including amounts in VIEs of $190 and $8, respectively) 190 8
Energy assets, net (including amounts in VIEs of $122,641 and $55,712, respectively) 122,641 55,712
Other assets (including amounts in VIEs of $1,613 and $1,398, respectively) 1,613 1,398
Current portions of long-term debt and capital lease liabilities (including amounts in VIEs of $1,712 and $0, respectively) 1,712 0
Accounts payable (including amounts in VIEs of $234 and $764, respectively) 234 764
Accrued expenses and other current liabilities (including amounts in VIEs of $4,233 and $149, respectively) 4,233 149
Long-term debt and capital lease liabilities, less current portions and net of deferred financing fees (including amounts in VIEs of $26,461 and $0, respectively) 26,461 0
Other liabilities (including amounts in VIEs of $2,131 and $0, respectively) $ 2,131 $ 0