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	$ 18,263	$ 1,983	$ 8,172
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	10,614	9,853	9,921
Unrealized foreign currency (gain) loss	(1,284)	2,047	346
Impairment of intangible assets	0	0	850
Fair value adjustments to earnout liabilities	(229)	704	1,193
Earnout payments	(1,007)	(587)	0
Loss (gain) on sale of property and equipment	10	(83)	63
Amortization of debt discount	371	404	415
Share based compensation expense	3,895	3,335	1,758
Bad debt expense	1,340	688	928
Inventory reserve expense	140	82	494
Deferred income tax (benefit) expense	(39)	0	1,038
Changes in operating assets and liabilities, net of acquisitions and divestitures:
Accounts receivable	(6,751)	(13,165)	8,367
Cost and estimated earnings of billings on uncompleted contracts	(16,851)	(7,007)	(9,561)
Inventories	(6,023)	(203)	4,366
Prepaid expenses and other current assets	37	5,911	(962)
Deferred charges and other assets	2,478	300	(4,095)
Accounts payable and accrued expenses	22,536	440	336
Billings in excess of costs and estimated earnings on uncompleted contracts	4,405	8,431	(17,635)
Income taxes payable	1,424	1,047	460
Other liabilities	(3,680)	(882)	(2,033)
Net cash provided by operating activities	29,649	13,298	4,421
Cash flows from investing activities:
Acquisitions of property and equipment	(3,376)	(2,616)	(3,945)
Net proceeds from sale of assets	19	533	605
Cash paid for acquisitions	(44,900)	0	(5,895)
Net cash used in investing activities	(48,257)	(2,083)	(9,235)
Cash flows from financing activities:
Borrowings on revolving credit lines	75,200	51,400	96,000
Repayments on revolving credit lines.	(35,900)	(57,100)	(86,800)
Borrowings of long-term debt	11,000
Repayments of long-term debt	(3,120)	(2,738)	(5,009)
Repayments of notes payable	(500)
Deferred financing fees paid	(130)	(801)	0
Payments on capital leases and sale-leaseback financing liability	(600)	(603)	(467)
Earnout payments	0	(823)	0
Proceeds from employee stock purchase plan, exercise of stock options, and dividend reinvestment plan	671	230	0
Distributions to non-controlling interest	(1,425)	(107)	0
Common stock repurchases	(7,020)	(5,014)	0
Net cash (used in) provided by financing activities	38,176	(15,556)	3,724
Effect of exchange rate changes on cash and cash equivalents	(4,978)	(1,475)	1,943
Net (decrease) increase in cash, cash equivalents and restricted cash	14,590	(5,816)	853
Cash, cash equivalents and restricted cash at beginning of year	31,995	37,811	36,958
Cash, cash equivalents and restricted cash at end of year	46,585	31,995	37,811
Cash paid (received) during the period for:
Interest	5,007	2,146	3,172
Income taxes	$ 5,378	$ (2,570)	$ 2,156