Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net earnings	$ 22,102	$ 11,080
Adjustments to reconcile net earnings to net cash provided by (used in) operating activities:
Depreciation and amortization	8,316	8,478
Stock-based compensation	1,087	1,198
Amortization of deferred financing costs	34	331
Deferred income taxes	(2,965)	576
Net unrealized gains on foreign currency revaluation	(373)	(131)
Gains on sale of property	0	(6,175)
Other, net	90	496
Changes in operating assets and liabilities:
Accounts receivable, net	(12,704)	(12,593)
Unbilled receivables	4,998	(4,142)
Inventories	(25,284)	(10,362)
Accounts payable	6,323	11,066
Accrued expenses	4,421	4,148
Other operating assets/liabilities, net	5,101	(5,893)
Net cash provided by (used in) operating activities	11,146	(1,923)
Cash flows from investing activities:
Purchases of property, plant and equipment	(3,546)	(2,465)
Payments for acquisitions, net of cash acquired	0	(16,811)
Proceeds from sale of property, plant and equipment	87	6,756
Net cash used in investing activities	(3,459)	(12,520)
Cash flows from financing activities:
Dividends paid to common stockholders	(1,646)	(1,630)
Purchase of treasury stock	(349)	0
Repayments of long-term debt	0	(2,974)
Net cash used in financing activities	(1,995)	(4,604)
Effect of exchange rate changes on cash and cash equivalents	(1,618)	533
Net increase (decrease) in cash and cash equivalents	4,074	(18,514)
Cash and cash equivalents - beginning of period	61,756	84,939
Cash and cash equivalents - end of period	65,830	66,425
Supplementary information:
Cash paid during the period for income taxes, net of refunds received	4,614	2,036
Cash paid during the period for interest payments	1,105	1,174
ROU assets obtained in exchange for lease obligations	5,734	6,032
Goodwill	24,771
Cash paid for acquisitions, net of cash acquired	(0)	16,811
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	$ (3,903)