Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 8,772	$ (31,970)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	13,995	13,004
Goodwill impairment charge	0	45,918
Intangible assets impairment charge	0	5,581
Inventory write-downs	2,346	13,569
Provision for bad debts - accounts receivable	539	2,891
Share-based compensation expense	3,787	4,289
Deferred income tax benefit	(1,635)	(12,352)
Gain on sale of property, plant and equipment	0	(3,435)
Change in fair value of acquisition-related contingent liabilities	(189)	(450)
Change in fair value of written put options	489	(1,565)
Changes in assets and liabilities, net of acquisition of businesses:
Accounts receivable	1,051	680
Accounts receivable - other	3,019	1,347
Contract assets	4,310	(15,092)
Inventories	24,672	(15,898)
Prepaid expenses and other current assets	5,496	5,225
Other assets	(2,012)	1,858
Accounts payable and other current liabilities	13,310	(14,614)
Payment of acquisition-related contingent liabilities	(279)	(3,346)
Long-term pension liability	407	2,190
Other long-term liabilities	851	(434)
Net cash provided by (used in) operating activities	78,929	(2,604)
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(4,963)	(11,018)
Proceeds from disposals of property, plant and equipment	0	4,795
Acquisition of businesses	0	(11,202)
Other investments	(545)	0
Net cash used in investing activities	(5,508)	(17,425)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings of debt	6,000	332,143
Repayment of debt	(67,750)	(292,773)
Debt issuance costs	(300)	(869)
Payment of cash dividends	(9,188)	(8,653)
Payment of acquisition-related contingent liabilities	(553)	(1,416)
Proceeds received on exercise of stock options	175	728
Tax withholdings on vesting of restricted shares and performance based shares and on exercise of stock rights	0	(314)
Net cash provided by (used in) financing activities	(71,616)	28,846
Effect of currency exchange rates on cash	369	(30)
Net increase in cash and cash equivalents	2,174	8,787
Cash and cash equivalents balance, beginning of year	17,722	8,935
Cash and cash equivalents balance, end of year	19,896	17,722
Supplemental disclosure of cash flow information:
Income taxes paid (refunded), net	(978)
Income taxes paid (refunded), net		1,348
Interest paid	$ 9,588	$ 4,767