Condensed 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	$ 1,680	$ 6,670
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	4,906	4,648
Unrealized foreign currency loss (gain)	1,628	(52)
Fair value adjustment to earnout liabilities	500
Gain on sale of property and equipment	(67)
Debt discount amortization	203	208
Share-based compensation expense	1,581	751
Bad debt expense	110	457
Inventory reserve expense	209	269
Changes in operating assets and liabilities, net of divestitures:
Accounts receivable	(2,638)	8,623
Costs and estimated earnings in excess of billings on uncompleted contracts	(1,319)	(3,446)
Inventories	(409)	1,694
Prepaid expense and other current assets	3,642	(1,068)
Deferred charges and other assets	(496)	(1,553)
Accounts payable and accrued expenses	(2,784)	(5,229)
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,490)	(10,057)
Income taxes payable	(508)
Other liabilities	(639)	193
Net cash provided by operating activities	4,109	2,108
Cash flows from investing activities:
Acquisitions of property and equipment	(997)	(1,992)
Net proceeds from sale of assets	534
Net cash paid for acquisition		(6,124)
Net cash used in investing activities	(463)	(8,116)
Cash flows from financing activities:
Borrowings on revolving credit lines	18,200	72,500
Repayments on revolving credit lines	(22,300)	(59,000)
Repayments of long-term debt	(1,250)	(1,250)
Payments on finance leases and financing liability	(271)	(203)
Earnout payments	(823)
Proceeds from employee stock purchase plan and exercise of stock options	128
Noncontrolling interest distribution	(107)
Net cash (used in) provided by financing activities	(6,423)	12,047
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(514)	141
Net (decrease) increase in cash, cash equivalents and restricted cash	(3,291)	6,180
Cash, cash equivalents and restricted cash at beginning of period	37,811	36,958
Cash, cash equivalents and restricted cash at end of period	34,520	43,138
Cash paid (received) during the period for:
Interest	1,122	1,850
Income taxes	$ (3,006)	$ (658)