Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net earnings	$ 5,064	$ 3,199
Adjustments to reconcile net earnings to net cash (used in) provided by operating activities:
Depreciation and amortization	4,301	4,145
Stock-based compensation	576	600
Amortization of deferred financing costs	34	165
Deferred income taxes	(451)	48
Net unrealized gains on foreign currency revaluation	(289)	(361)
Gains on sale of property	0	(6,175)
Other, net	131	(941)
Changes in operating assets and liabilities:
Accounts receivable, net	(6,694)	174
Unbilled receivables	7,719	1,267
Inventories	(16,344)	(1,293)
Accounts payable	(1,194)	804
Accrued expenses	(3,564)	(263)
Other operating assets/liabilities, net	2,963	397
Net cash (used in) provided by operating activities	(7,748)	1,766
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,040)	(1,203)
Payments for acquisitions, net of cash acquired	0	(14,759)
Proceeds from sale of property, plant and equipment	87	6,724
Net cash used in investing activities	(1,953)	(9,238)
Cash flows from financing activities:
Dividends paid to common stockholders	(823)	(815)
Repayments of long-term debt	0	(1,487)
Net cash used in financing activities	(823)	(2,302)
Effect of exchange rate changes on cash and cash equivalents	3	(1,125)
Net decrease in cash and cash equivalents	(10,521)	(10,899)
Cash and cash equivalents - beginning of period	61,756	84,939
Cash and cash equivalents - end of period	51,235	74,040
Supplementary information:
Income taxes, net of refunds received	1,152	578
Interest payments	461	627
Goodwill	26,272
Less: Deferred consideration	0	(1,278)
Cash paid for acquisitions, net of cash acquired	(0)	14,759
RMS and EOS Acquisitions [Member]
Supplementary information:
Fair value of identifiable net assets acquired	0	18,215
Goodwill	0	2,499
Fair value of net assets acquired	0	20,714
Fair value of consideration transferred	0	20,714
Less: Cash acquired in acquisitions	$ 0	$ (4,677)