CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ (61,363)	$ (2,910)
Adjustments to reconcile net income (loss) to net cash provided by (used for) operating activities:
Depreciation and amortization	5,692	6,045
Provision for credit losses	1	(204)
Deferred income taxes	701	269
Shares issued for employee benefit plan	352	324
Employee and director stock-based compensation	2,540	2,499
Impairment of goodwill	49,075	0
Impairment of long-term assets	49	0
Changes in operating assets and liabilities:
Accounts receivable and contract assets	7,723	(5,087)
Inventories	18,056	(4,599)
Prepaid expenses and other assets	1,408	(1,464)
Accounts payable and accrued liabilities	(26,051)	(13,174)
Accrued income taxes	(208)	332
Net cash provided by (used for) operating activities	(2,025)	(17,969)
Cash flows from investing activities:
Purchase of term deposit	0	(7,487)
Acquisition of net assets of Qterics, Inc.	0	(939)
Acquisitions of property, plant and equipment	(3,261)	(1,785)
Acquisitions of intangible assets	(1,570)	(1,410)
Net cash provided by (used for) investing activities	(4,831)	(11,621)
Cash flows from financing activities:
Borrowings under line of credit	14,000	42,000
Repayments on line of credit	(17,000)	(13,000)
Treasury stock purchased	(812)	(7,354)
Net cash provided by (used for) financing activities	(3,812)	21,646
Effect of foreign currency exchange rates on cash and cash equivalents	834	759
Net increase (decrease) in cash and cash equivalents	(9,834)	(7,185)
Cash and cash equivalents at beginning of period	66,740	60,813
Cash and cash equivalents at end of period	56,906	53,628
Supplemental cash flow information:
Income taxes paid	2,065	1,375
Interest paid	$ 1,413	$ 302