Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025
Statement of Cash Flows [Abstract]
Net cash flows provided by (used in) operating activities	$ 1,933	$ (7,614)
Cash flows used in investing activities:
Purchases of property, plant and equipment	(9,134)	(3,661)
Proceeds from government grants, used for purchase of equipment		323
Proceeds from sale of property, plant and equipment	7
Purchases of long-term marketable securities	(185)	(10)
Proceeds from sale of long-term marketable securities	449	334
Net cash flows used in investing activities	(8,863)	(3,014)
Cash flows provided by (used in) financing activities
Proceeds from Equipment Term Notes		13,500
Proceeds from revolving credit facility	18,632	18,332
Payments on revolving credit facility	(12,618)	(25,144)
Repayment of debt principal	(2,660)	(1,475)
Payment of debt issuance costs		(840)
Proceeds from shareholder exercise of warrants		1
Net cash flows provided by financing activities	3,354	4,374
Effect of exchange rate changes on cash and cash equivalents	(80)	772
Net decrease in cash and cash equivalents	(3,656)	(5,482)
Cash and cash equivalents at beginning of period	10,703	15,427
Cash and cash equivalents at end of period	7,047	9,945
Supplemental information:
Income tax payments (net of refunds)	1,114	760
Interest payments	4,709	4,508
Non-cash investing and financing activities:
Purchases of property, plant and equipment in accounts payable	1,110	1,389
Finance lease right-of-use assets exchanged for lease liabilities		23
Operating lease right-of-use assets exchanged for lease liabilities	$ 137	$ 633