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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Cash flows from operating activities:    
Net income $ 2,362 $ 3,559
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and finance lease amortization 2,799 2,935
Amortization of intangible assets 1,061 1,194
Deferred income taxes 635 383
Share-based compensation expense 990 635
Other, net 473 117
Trade and other receivables 11,026 (6,640)
Contract assets, net 13,775 (2,430)
Inventories 59 (3,057)
Prepaid expenses and other assets 2,359 2,507
Accounts payable (1,518) 4,616
Accrued and other liabilities (7,739) (2,171)
Net cash provided by operating activities 26,282 1,648
Cash flows from investing activities:    
Purchases of property and equipment (4,382) (4,440)
Other investing activities 0 30
Net cash used in investing activities (4,382) (4,410)
Cash flows from financing activities:    
Borrowings on line of credit 34,602 38,023
Repayments on line of credit (55,682) (34,532)
Payments on finance lease obligations (145) (125)
Tax withholdings related to net share settlements of equity awards (422) (294)
Other financing activities 0 (6)
Net cash provided by (used in) financing activities (21,647) 3,066
Change in cash and cash equivalents 253 304
Cash and cash equivalents, beginning of period 3,681 2,997
Cash and cash equivalents, end of period 3,934 3,301
Noncash investing and financing activities:    
Accrued property and equipment purchases 750 857
Right-of-use assets obtained in exchange for operating lease liabilities 0 26
Right-of-use assets obtained in exchange for finance lease liabilities $ 394 $ 338