Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ (68,987)	$ 49,387	$ 58,293
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	10,070	13,906	18,931
Stock-based compensation	17,734	25,995	30,505
(Gain) Loss on investments, net	(87)	1,362	6,222
Goodwill impairment	44,442	0	0
Change in fair value of contingent consideration	0	(3,003)	(2,928)
Deferred income taxes	(21,842)	4,498	(9,386)
Provision for excess and obsolete inventory	3,657	3,877	7,872
Other	0	0	74
Changes in assets and liabilities:
Accounts receivable, net	(16,327)	75,894	(59,885)
Inventories	12,396	(147,432)	55,505
Prepaid expenses and other assets	5,696	(4,127)	4,833
Accounts payable	11,857	(16,493)	9,744
Accrued employee compensation	(572)	(10,316)	15,718
Other accrued liabilities	(13,332)	4,869	28,194
Deferred revenue	5,425	2,978	8,112
Income taxes payable	(3,862)	(5,974)	9,346
Net cash provided by (used in) operating activities	(13,732)	(4,579)	181,150
Cash flows from investing activities:
Purchases of short-term investments	(153,577)	(146)	(305)
Proceeds from maturities of short-term investments	80,417	710	290
Purchases of property and equipment	(5,757)	(9,864)	(10,296)
Purchases of long-term investments	(600)	(685)	(6,525)
Net cash used in investing activities	(79,517)	(9,985)	(16,836)
Cash flows from financing activities:
Repurchases of common stock	(24,377)	(75,000)	(23,800)
Restricted stock unit withholdings	(4,807)	(7,660)	(5,090)
Proceeds from exercise of stock options	743	9,620	16,950
Proceeds from issuance of common stock under employee stock purchase plan	4,418	4,916	3,878
Net cash used in financing activities	(24,023)	(68,124)	(8,062)
Net increase (decrease) in cash and cash equivalents	(117,272)	(82,688)	156,252
Cash and cash equivalents, at beginning of period	263,772	346,460	190,208
Cash and cash equivalents, at end of period	146,500	263,772	346,460
Supplemental Cash Flow Information:
Cash paid for income taxes, net	9,396	20,589	8,218
Non-cash investing and financing activities:
Unpaid property and equipment	$ 203	$ 526	$ 1,273