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)	$ 28,182	$ 13,254	$ (29,271)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	12,260	12,546	11,737
Amortization of intangibles	0	507	3,970
Stock-based compensation	25,212	24,056	18,040
Amortization of convertible debt discount	1,171	6,308	7,058
Amortization of warrant	1,734	1,741	1,746
Foreign currency remeasurement	(2,685)	(5,126)	6,391
Loss on convertible debt extinguishment	0	0	1,362
Deferred income taxes, net	4,894	(6,197)	(105)
Provision for expected credit losses and returns	1,954	4,142	1,666
Provision for excess and obsolete inventories	5,988	3,460	1,847
Gain on sale of investment in equity securities	(4,370)	0	0
Other adjustments	513	181	409
Changes in operating assets and liabilities:
Accounts receivable	(23,136)	(26,722)	21,186
Inventories	(54,431)	(39,338)	(8,195)
Other assets	(8,402)	(3,096)	11,556
Accounts payable	5,837	42,303	(18,173)
Deferred revenues	2,610	15,014	19,751
Other liabilities	8,145	(2,016)	(11,812)
Net cash provided by operating activities	5,476	41,017	39,163
Cash flows from investing activities:
Proceeds from sale of investment	7,962	0	0
Purchases of property and equipment	(9,250)	(12,975)	(32,205)
Net cash used in investing activities	(1,288)	(12,975)	(32,205)
Cash flows from financing activities:
Payment of convertible debt	(37,707)	0	(7,999)
Payment of convertible debt issuance costs	0	0	(672)
Proceeds from other debts	3,499	3,861	9,398
Repayment of other debts	(4,583)	(6,169)	(6,646)
Repurchase of common stock	(5,133)	0	0
Proceeds from common stock issued to employees	7,092	12,311	5,472
Taxes paid related to net share settlement of equity awards	(6,301)	(2,064)	(1,662)
Net cash provided by (used in) financing activities	(43,133)	7,939	(2,109)
Effect of exchange rate changes on cash and cash equivalents	(4,900)	(1,195)	738
Net increase (decrease) in cash and cash equivalents	(43,845)	34,786	5,587
Cash and cash equivalents, beginning of the year	133,431	98,645	93,058
Cash and cash equivalents, end of the year	89,586	133,431	98,645
Supplemental disclosure of cash flow information:
Income tax payments (refunds), net	9,036	2,525	(17)
Interest payments, net	3,796	4,095	4,221
Supplemental schedule of non-cash investing and financing activities:
Capital expenditures incurred but not yet paid	1,075	751	1,155
Fair value of 2022 Notes used to settle 2020 Notes	$ 0	$ 0	$ 44,357