Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 12,004	$ 8,772
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,185	13,995
Inventory write-downs	2,423	2,346
Share-based compensation expense	4,270	3,787
Deferred income tax benefit	(1,581)	(1,635)
Change in fair value of acquisition-related contingent liabilities	437	(189)
Change in fair value of written put options	653	489
Other, net	739	749
Changes in assets and liabilities, net of acquisition of businesses:
Accounts receivable	7,977	1,051
Contract assets	(3,434)	4,310
Inventories	(1,031)	24,672
Prepaid expenses and other current assets	(2,375)	8,515
Other assets	(2,953)	(2,222)
Accounts payable and other current liabilities	1,934	13,310
Payment of acquisition-related contingent liabilities	(686)	(279)
Long-term pension liability	433	407
Other long-term liabilities	1,433	851
Net cash provided by operating activities	33,428	78,929
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(4,435)	(4,963)
Acquisition of business	(4,000)	0
Other investments	0	(545)
Net cash used in investing activities	(8,435)	(5,508)
CASH FLOWS FROM FINANCING ACTIVITIES
Borrowings under revolving lines of credit	47,000	6,000
Payments under revolving lines of credit	(50,000)	(64,000)
Payment of term loan	(4,687)	(3,750)
Debt issuance costs	0	(300)
Payment of cash dividends	(9,284)	(9,188)
Payment of acquisition-related contingent liabilities	(897)	(553)
Proceeds received on exercise of stock options	1,128	175
Shares withheld for taxes	(317)	0
Common stock reacquired and retired	(7,417)	0
Net cash used in financing activities	(24,474)	(71,616)
Effect of currency exchange rates on cash	(1,649)	369
Net (decrease) increase in cash and cash equivalents	(1,130)	2,174
Cash and cash equivalents balance, beginning of year	19,896	17,722
Cash and cash equivalents balance, end of year	18,766	19,896
Supplemental disclosure of cash flow information:
Income taxes paid (refunded), net	2,303
Income taxes paid (refunded), net		(978)
Interest paid	$ 5,917	$ 9,588