Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ (104,767,000)	$ (68,987,000)	$ 49,387,000
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	7,161,000	10,070,000	13,906,000
Stock-based compensation	17,938,000	17,734,000	25,995,000
(Gain) Loss on investments, net	(3,226,000)	(87,000)	1,362,000
Goodwill impairment	0	44,442,000	0
Intangibles impairment	1,071,000	0	0
Change in fair value of contingent consideration	0	0	(3,003,000)
Deferred income taxes	82,319,000	(21,842,000)	4,498,000
Provision for excess and obsolete inventory	3,168,000	3,657,000	3,877,000
Changes in assets and liabilities:
Accounts receivable, net	92,425,000	(16,327,000)	75,894,000
Inventories	47,595,000	12,396,000	(147,432,000)
Prepaid expenses and other assets	(3,189,000)	5,696,000	(4,127,000)
Accounts payable	(38,947,000)	11,857,000	(16,493,000)
Accrued employee compensation	(2,846,000)	(572,000)	(10,316,000)
Other accrued liabilities	(45,893,000)	(13,332,000)	4,869,000
Deferred revenue	6,969,000	5,425,000	2,978,000
Income taxes payable	(2,925,000)	(3,862,000)	(5,974,000)
Net cash provided by (used in) operating activities	56,853,000	(13,732,000)	(4,579,000)
Cash flows from investing activities:
Purchases of short-term investments	(135,920,000)	(153,577,000)	(146,000)
Proceeds from maturities of short-term investments	115,006,000	80,417,000	710,000
Purchases of property and equipment	(5,799,000)	(5,757,000)	(9,864,000)
Purchases of long-term investments	(720,000)	(600,000)	(685,000)
Net cash used in investing activities	(27,433,000)	(79,517,000)	(9,985,000)
Cash flows from financing activities:
Repurchases of common stock	0	(24,377,000)	(75,000,000)
Restricted stock unit withholdings	(2,793,000)	(4,807,000)	(7,660,000)
Proceeds from exercise of stock options	0	743,000	9,620,000
Proceeds from issuance of common stock under employee stock purchase plan	3,590,000	4,418,000	4,916,000
Net cash provided by (used in) financing activities	797,000	(24,023,000)	(68,124,000)
Net increase (decrease) in cash and cash equivalents	30,217,000	(117,272,000)	(82,688,000)
Cash and cash equivalents, at beginning of period	146,500,000	263,772,000	346,460,000
Cash and cash equivalents, at end of period	176,717,000	146,500,000	263,772,000
Supplemental Cash Flow Information:
Cash paid for income taxes, net	7,194,000	9,396,000	20,589,000
Non-cash investing and financing activities:
Unpaid property and equipment	$ 476,000	$ 203,000	$ 526,000