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CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities:    
Net income (loss) $ (21,592) $ 368
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
Depreciation and lease asset amortization 3,215 4,287
Other amortization, net 15 31
Asset impairments 22,750  
(Gain) loss on sale of fixed assets and other assets, net 45 (5)
Stock-based compensation expense 677 440
Changes in operating assets and liabilities:    
Contract receivables and retainage, net 1,654 12,704
Contract assets (4,561) (25,732)
Prepaid expenses, inventory and other current assets (676) 668
Accounts payable (11,020) 2,081
Contract liabilities (5,324) 702
Accrued expenses and other current liabilities 1,330 (1,840)
Noncurrent assets and liabilities, net (including long-term retainage) (463) 2,538
Net cash used in operating activities (11,369) (3,758)
Cash flows from investing activities:    
Capital expenditures (921) (7,745)
Proceeds from Shipyard Transaction, net of transaction costs 31,677  
Proceeds from sale of property and equipment 4,439 1,080
Purchases of short-term investments   (19,991)
Maturities of short-term investments 8,000 20,000
Net cash provided by (used in) investing activities 43,195 (6,656)
Cash flows from financing activities:    
Proceeds from borrowings   10,000
Payment of financing cost   (31)
Tax payments for vested stock withholdings (108) (74)
Net cash provided by (used in) financing activities (108) 9,895
Net increase (decrease) in cash, cash equivalents and restricted cash 31,718 (519)
Cash, cash equivalents and restricted cash, beginning of period 43,159 49,703
Cash, cash equivalents and restricted cash, end of period 74,877 $ 49,184
Supplemental cash flow information:    
Deferred Transaction Price receivable from Shipyard Transaction 2,200  
Shipyard Transaction    
Adjustments to reconcile net income (loss) to net cash used in operating activities:    
(Gain) loss on sale of fixed assets and other assets, net $ 2,581  

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