Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 2,810,000	$ 1,298,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,288,000	2,435,000
Unrealized foreign currency loss	263,000	576,000
(Gain) loss on sale of property and equipment	(7,000)	(66,000)
Debt discount amortization	93,000	102,000
Share-based compensation expense	877,000	693,000
Bad debt expense	45,000	41,000
Inventory reserve expense	213,000	108,000
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(18,964,000)	(3,493,000)
Costs and estimated earnings in excess of billings on uncompleted contracts	1,515,000	4,319,000
Inventories	(3,316,000)	456,000
Prepaid expense and other current assets	(878,000)	5,269,000
Deferred charges and other assets	996,000	822,000
Accounts payable and accrued expenses	7,452,000	1,548,000
Billings in excess of costs and estimated earnings on uncompleted contracts	7,615,000	(3,564,000)
Income taxes payable	137,000	(499,000)
Other liabilities	(1,341,000)	(55,000)
Net cash (used in) provided by operating activities	(202,000)	9,908,000
Cash flows from investing activities:
Acquisitions of property and equipment	(665,000)	(492,000)
Net proceeds from sale of assets	7,000	534,000
Net cash paid for acquisition	(19,583,000)
Net cash (used in) provided by investing activities	(20,241,000)	42,000
Cash flows from financing activities:
Borrowings on revolving credit lines	17,800,000	9,200,000
Repayments on revolving credit lines	(7,200,000)	(11,900,000)
Borrowing on long-term debt	11,000,000
Repayments of long-term debt	(643,000)	(625,000)
Deferred financing fees paid	(130,000)
Payments on finance leases and financing liability	(145,000)	(135,000)
Earnout payments		(823,000)
Proceeds from employee stock purchase plan and exercise of stock options	77,000	128,000
Noncontrolling interest distributions	(900,000)
Net cash provided by (used in) financing activities	19,859,000	(4,155,000)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(1,111,000)	(356,000)
Net (decrease) increase in cash, cash equivalents and restricted cash	(1,695,000)	5,439,000
Cash, cash equivalents and restricted cash at beginning of period	31,995,000	37,811,000
Cash, cash equivalents and restricted cash at end of period	30,300,000	43,250,000
Cash paid (received) during the period for:
Interest	812,000	641,000
Income taxes	$ 390,000	$ (3,717,000)