CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Cash flows from operating activities:
Net income (loss)	$ (26,576)	$ (13,124)	$ (55,231)	$ (31,893)	$ (58,351)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	2,659	2,734	7,924	7,584	10,251
Accrued Interest	1	0	(822)	0	(94)
Asset write-downs and impairment of field equipment	163	113	514	467	649
Share-based compensation	26,305	25,758	77,173	72,502	94,900
Foreign currency remeasurement loss (gain)	(141)	495	1,051	3,024	3,231
Decrease (increase) in accounts receivables	11,522	(3,726)	6,318	3,923	5,270
Amortization of discount (premium)	232	785	1,743	2,313	3,101
Decrease (increase) in inventories	2,952	3,818	(2,061)	4,185	2,483
Decrease (increase) in other long-term assets	1,665	1,367	5,885	4,383	4,519
Increase (decrease) in accounts payables and accrued expenses	5,265	8,126	(1,895)	10,622	27,777
Increase (decrease) in other long-term liabilities	(1,627)	(1,946)	(6,104)	(8,758)	(10,980)
Net cash provided by (used in) operating activities	22,420	24,400	34,495	68,352	82,756
Cash flows from investing activities:
Purchase of property, equipment and field equipment	(5,703)	(3,297)	(14,927)	(9,896)	(24,170)
Proceeds from maturity of short-term investments	358,729	350,000	1,074,763	958,000	958,000
Purchase of short-term investments	(503,270)	(44,000)	(1,071,733)	(593,848)	(1,078,664)
Net cash provided by (used in) investing activities	(150,244)	302,703	(11,897)	354,256	(144,834)
Cash flows from financing activities:
Proceeds from issuance of shares, net	0	0	2,759	2,371	4,546
Repayment of long-term debt	(7)	(6)	(21)	(19)	(26)
Exercise of options	4,211	3,042	9,343	19,698	21,182
Net cash provided by (used in) financing activities	4,204	3,036	12,081	22,050	25,702
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(107)	(34)	(252)	(139)	(188)
Increase (decrease) in cash, cash equivalents and restricted cash	(123,727)	330,105	34,427	444,519	(36,564)
Cash, cash equivalents and restricted cash at the beginning of the period	367,763	360,587	209,609	246,173	246,173
Cash, cash equivalents and restricted cash at the end of the period	244,036	690,692	244,036	690,692	209,609
Cash paid during the period for:
Income taxes paid (refunded), net	907	991	3,933	1,075	3,110
Interest paid	1	1	3	3	101
Non-cash activities:
Right-of-use assets obtained in exchange for lease liabilities	$ 2,828	$ 1,023	$ 6,687	$ 1,972	$ 5,387