Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Statement of Cash Flows [Abstract]
Consolidated net (loss) income	$ (3,608)	$ 19,225
Adjustments to reconcile consolidated net (loss) income to net cash used in operating activities:
Depreciation and amortization	11,655	7,022
Stock-based compensation	17,679	16,198
Inventory write-downs	1,573	1,951
Deferred taxes	(2,741)	2,570
Other	(749)	1,309
Changes in operating assets and liabilities:
Accounts receivable	(54,299)	(22,898)
Inventories	(36,051)	(41,543)
Prepaid expenses and other current and non-current assets	(2,460)	(5,843)
Accounts payable	9,024	(689)
Accrued expenses and other non-current liabilities	15,658	5,020
Proceeds from lease incentives	230	0
Net cash provided by (used in) operating activities	(44,089)	(17,678)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable investments	0	(32,939)
Proceeds from sales of marketable investments	1,180	2,000
Proceeds from maturities of marketable investments	44,579	67,810
Purchases of property and equipment	(9,388)	(7,286)
Other	0	(150)
Net cash provided by (used in) investing activities	36,371	29,435
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercises of stock options	4,568	978
Proceeds from issuance of stock under employee stock purchase plan	7,998	7,354
Payment of employee taxes related to vested stock	(5,081)	(6,988)
Payments of finance lease obligations	(858)	(692)
Other	(137)	(93)
Net cash provided by financing activities	6,490	559
Effect of foreign exchange rate changes on cash and cash equivalents	83	291
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(1,145)	12,607
CASH AND CASH EQUIVALENTS—Beginning of period	59,379	69,670
CASH AND CASH EQUIVALENTS—End of period	58,234	82,277
NONCASH INVESTING AND FINANCING ACTIVITIES:
Right-of-use assets obtained in exchange for lease obligations	51,191	54,444
Right-of-use assets obtained in exchange for finance lease obligations	89	520
Purchase of property and equipment funded through accounts payable and accrued liabilities	3,059	2,236
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for amounts included in the measurement of operating lease liabilities	8,458	3,914
Cash paid for income taxes	$ 2,157	$ 689