CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows provided by (used in) operating activities:
Net (loss) income	$ 13,833	$ (1,010)	$ (1,412)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	14,281	11,303	9,632
Amortization of purchased intangible assets	36,926	1,391	1,449
Amortization of deferred debt issuance costs	553	248	207
Amortization of acquisition-related inventory valuation step-up	430	0	0
Stock-based compensation	10,058	6,574	5,675
Deferred income taxes	(599)	(1,846)	(2,313)
Restructuring expenses, net and asset impairments	182	127	3,387
Other	1,344	(204)	247
Change in:
Accounts receivable, net	(23,108)	(9,769)	30,227
Inventories	(33,766)	(12,440)	2,992
Prepaid expenses and other	9,118	(19,413)	675
Accounts payable	7,086	13,584	(14,772)
Contract liabilities	11,183	1,613	1,985
Accrued expenses and other liabilities	(2,585)	(2,970)	(7,617)
Net cash provided by (used in) operating activities	44,936	(12,812)	30,362
Cash flows used in investing activities:
Acquisition of business, net of cash acquired	0	(261,000)	0
Consideration adjustments related to acquisition of business (Note 3)	(2,404)	0	0
Promissory note to redeemable noncontrolling interest holder	0	(24,902)	0
Investment in marketable securities	0	(123,984)	(25,740)
Proceeds from maturities of marketable securities	0	4,799	0
Proceeds from sales of marketable securities	0	144,921	0
Acquisition of property, plant and equipment	(18,584)	(8,659)	(13,853)
Proceeds on sale of property, plant and equipment	62	1,019	36
Net cash used in investing activities	(20,926)	(267,806)	(39,557)
Cash flows (used in) provided by financing activities:
Borrowings on term loan	0	150,000	0
Repayments on term loan	(15,000)	0	0
Repayments on capital expenditure facility	0	(11,750)	(3,125)
Payments of debt issuance costs	(180)	(2,337)	(90)
Distributions to redeemable noncontrolling interest holder	(12,300)	0	0
Net proceeds from issuance of common stock to employees and directors	201	434	431
Treasury stock purchases	(1,231)	(2,485)	(1,890)
Payment of dividends	0	0	(3,749)
Net cash (used in) provided by financing activities	(28,510)	282,585	17,317
Effects of exchange rates on cash	(1,166)	656	(288)
Net (decrease) increase in cash and cash equivalents	(5,666)	2,623	7,834
Cash and cash equivalents, beginning of the period	30,810	28,187	20,353
Cash and cash equivalents, end of the period	25,144	30,810	28,187
Supplemental cash flow information:
Non-cash consideration for acquisition of business, net of cash acquired	740	21,716	0
Non-cash lease liabilities arising from obtaining right-of-use assets	3,978	41,219	0
Cash paid during the period for -
Interest	6,236	51	402
Income taxes, net	2,860	7,533	497
Equity Offering
Cash flows (used in) provided by financing activities:
Net proceeds from issuance of common stock	0	123,461	0
ATM Offering
Cash flows (used in) provided by financing activities:
Net proceeds from issuance of common stock	$ 0	$ 25,262	$ 25,740