Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 31,149	$ 11,523	$ 19,050
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and finance lease amortization	12,664	11,482	12,344
Amortization of intangible assets	4,439	2,142	2,207
Deferred income taxes	514	180	2,908
Gain on insurance proceeds	0	0	(1,147)
Share-based compensation expense	3,702	3,216	3,088
Other, net	(286)	193	1,889
Changes in operating assets and liabilities, net of acquired assets and assumed liabilities:
Trade and other receivables	(19,346)	392	1,563
Contract assets, net	225	(33,752)	8,109
Inventories	(11,378)	(17,650)	7,153
Prepaid expenses and other assets	3,381	6,727	2,514
Accounts payable	(5,826)	16,783	(3,501)
Accrued and other liabilities	(1,698)	(7,047)	(90)
Net cash provided by (used in) operating activities	17,540	(5,811)	56,087
Cash flows from investing activities:
Acquisition of business, net of cash acquired	0	(87,215)	(48,728)
Purchases of property and equipment	(22,829)	(13,262)	(14,013)
Purchases of intangible assets	(327)	0	(329)
Proceeds from insurance	0	0	1,637
Other investing activities	106	325	0
Net cash used in investing activities	(23,050)	(100,152)	(61,433)
Cash flows from financing activities:
Borrowings on line of credit	177,634	122,272	41,377
Repayments on line of credit	(180,699)	(35,511)	(41,377)
Borrowings on other debt	10,756	0	15,879
Payments on other debt	0	(13,762)	(2,117)
Payments on finance lease liabilities	(597)	(415)	(420)
Tax withholdings related to net share settlements of equity awards	(853)	(1,166)	(618)
Other financing activities	(47)	(385)	(465)
Net cash provided by financing activities	6,194	71,033	12,259
Change in cash and cash equivalents	684	(34,930)	6,913
Cash and cash equivalents, beginning of period	2,997	37,927	31,014
Cash and cash equivalents, end of period	3,681	2,997	37,927
Supplemental disclosure of cash flow information:
Cash paid during the period for interest, net of amounts capitalized	3,170	339	599
Cash paid during the period for income taxes (net of refunds of $23, $79, and $153)	13,774	2,481	1,397
Noncash investing and financing activities:
Accrued property and equipment purchases	1,314	788	325
Accrued consideration in acquisition of business	1,820	911	0
Right-of-use assets obtained in exchange for operating lease liabilities	568	16,043	4,471
Right-of-use assets obtained in exchange for finance lease liabilities	$ 1,466	$ 853	$ 507