Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Loss	$ (89,793)	$ (61,573)
Adjustments to reconcile loss to net cash used in operating activities:
Depreciation of property, plant and equipment	431	357
Financing expense, net	359	166
Share-based compensation	4,233	3,368
Amortization of debt discount and issuance costs	638
Operating lease right-of-use assets	2,109	1,891
Operating lease liabilities	(2,193)	(1,318)
Accrued severance pay, net	12
Decrease (increase) in prepaid expenses and other assets	1,008	(1,630)
Increase in trade payables	1,941	5,066
Increase (decrease) in accrued expenses and current liabilities	(505)	3,454
Net cash used in operating activities	(81,760)	(50,219)
Cash flows from investing activities:
Purchase of property, plant and equipment	(15,054)	(11,804)
Purchase of marketable securities	(102,179)
Proceeds from maturity of marketable securities	61,534	13,551
Investment in restricted deposits	(5,222)	(158)
Net cash provided by (used in) investing activities	(60,921)	1,589
Cash flows from financing activities:
Proceeds from issuance of ordinary shares, net		133,312
Proceeds from exercise of options	626	650
Proceeds from issuance of convertible senior notes, net	70,777
Net cash provided by financing activities	71,403	133,962
Increase (decrease) in cash and cash equivalents	(71,278)	85,332
Cash and cash equivalents at beginning of year	127,170	41,838
Cash and cash equivalents at end of year	55,892	127,170
Significant non-cash transactions:
Lease liabilities arising from new right-of-use asset	2,503	3,373
Issuance expenses on credit		468
Purchase of property, plant and equipment on credit	634	415
Supplemental disclosures of cash flow information:
Cash paid for interest	$ 2,572	$ 34