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 earnings	$ 11,080	$ 1,769
Adjustments to reconcile net earnings to net cash (used in) provided by operating activities:
Depreciation and amortization	8,478	8,234
Stock-based compensation	1,198	1,220
Amortization of deferred financing costs	331	316
Deferred income taxes	576	(1,030)
Net unrealized (gains) losses on foreign currency revaluation	(131)	58
Gain on sale of property	(6,175)	0
Other, net	496	105
Changes in operating assets and liabilities:
Accounts receivable, net	(12,593)	(2,463)
Unbilled receivables	(4,142)	984
Inventories	(10,362)	1,906
Accounts payable	11,066	994
Accrued expenses	4,148	1,307
Other operating assets/liabilities, net	(5,893)	3,443
Net cash (used in) provided by operating activities	(1,923)	16,843
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,465)	(2,980)
Payments for acquisitions, net of cash acquired	(16,811)	0
Proceeds from disposal/sale of property, plant and equipment	6,756	20
Net cash used in investing activities	(12,520)	(2,960)
Cash flows from financing activities:
Dividends paid to common stockholders	(1,630)	(1,613)
Deferred financing costs	0	(600)
Repayments of long-term debt	(2,974)	(8,179)
Net cash used in financing activities	(4,604)	(10,392)
Effect of exchange rate changes on cash and cash equivalents	533	(492)
Net (decrease) increase in cash and cash equivalents	(18,514)	2,999
Cash and cash equivalents - beginning of period	84,939	72,289
Cash and cash equivalents - end of period	66,425	75,288
Supplementary information:
Income taxes, net of refunds received	2,036	1,473
Interest payments	1,174	2,339
Goodwill	28,178
Cash paid for acquisitions, net of cash acquired	16,811	(0)
RMS and EOS Acquisitions [Member]
Supplementary information:
Fair value of identifiable net assets acquired	16,055	0
Goodwill	4,659	0
Fair value of net assets acquired	20,714	0
Fair value of consideration transferred	20,714	0
Less: Cash acquired in acquisitions	$ (3,903)	$ 0