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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Cash flows from operating activities:    
Net income $ 13,232 $ 4,306
Depreciation and finance lease amortization 6,065 5,805
Amortization of intangible assets 2,303 631
Deferred income taxes 299 67
Share-based compensation expense 1,308 1,840
Other, net (14) 286
Trade and other receivables (10,529) 8,516
Contract assets, net (12,484) (16,987)
Inventories (14,596) (805)
Prepaid expenses and other assets 5,908 3,385
Accounts payable 17,125 1,962
Accrued and other liabilities 1,552 (3,934)
Net cash provided by operating activities 10,169 5,072
Cash flows from investing activities:    
Purchases of property and equipment (8,456) (4,778)
Other investing activities 30 101
Net cash used in investing activities (8,426) (4,677)
Cash flows from financing activities:    
Borrowings on line of credit 80,908 0
Repayments on line of credit (80,956) 0
Payments on long-term debt 0 (13,762)
Payments on finance lease obligations (265) (196)
Tax withholdings related to net share settlements of equity awards (853) (1,166)
Other financing activities (31) 0
Net cash used in financing activities (1,197) (15,124)
Change in cash and cash equivalents 546 (14,729)
Cash and cash equivalents, beginning of period 2,997 37,927
Cash and cash equivalents, end of period 3,543 23,198
Noncash investing and financing activities:    
Accrued property and equipment purchases 1,035 831
Right-of-use assets obtained in exchange for operating lease liabilities 26 4,669
Right-of-use assets obtained in exchange for finance lease liabilities $ 894 $ 371