Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities
Net income (loss)	$ 17,220	$ (103,462)	$ 33,372
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	37,528	39,425	40,488
Stock-based compensation expense	15,989	17,545	19,095
Deferred taxes	(7,656)	(9,499)	339
Interest on finance lease obligations	1,055	0	0
Changes in fair value of contingent consideration	0	0	(13,253)
Loss on impairment of goodwill	0	118,008	0
Loss on foreign currency translation	3,906	0	0
Impairments related to closure of Japan business	0	2,842	0
Gain on disposal of property and equipment	(498)	(1,211)	0
Other	154	35	842
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	2,727	1,632	(20,112)
Inventories	112	(310)	(2,390)
Prepaid expenses and other	4,203	(2,081)	64
Income taxes	1,823	(2,681)	(774)
Accounts payable	(1,838)	1,375	4,654
Accrued liabilities and other	(1,451)	461	(7,083)
Net cash provided by operating activities	73,274	62,079	55,242
Investing activities
Purchases of property, equipment and other capital assets	(28,116)	(21,686)	(34,209)
Proceeds from sales of property, equipment and other capital assets	699	4,108	0
Cash used for acquisitions, net of cash acquired	0	0	(127,413)
Purchases of other assets and investments	(1,000)	0	0
Purchases of marketable securities	0	(46,872)	(16,159)
Proceeds from sales of marketable securities	0	1,998	64,913
Proceeds from maturities of marketable securities	23,865	19,360	18,204
Net cash used in investing activities	(4,552)	(43,092)	(94,664)
Financing activities
Proceeds from issuance of common stock from equity plans	3,835	3,950	5,862
Purchases of shares withheld for tax obligations	(1,436)	(1,682)	(4,225)
Repurchases of common stock and other	(43,951)	(29,659)	(23,279)
Principal repayments of finance lease obligations	(306)	(531)	(552)
Other	0	0	(4)
Net cash used in financing activities	(41,858)	(27,922)	(22,198)
Effect of exchange rate changes on cash and cash equivalents	368	(436)	(54)
Net (decrease) increase in cash and cash equivalents	27,232	(9,371)	(61,674)
Cash and cash equivalents, beginning of period	56,558	65,929	127,603
Cash and cash equivalents, end of period	83,790	56,558	65,929
Supplemental cash flow disclosure
Cash paid for interest	1,055	101	28
Cash paid for taxes	$ 15,892	$ 19,160	$ 7,583