CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (27,582)	$ (6,523)	$ (18,276)
Adjustments required to reconcile net loss to net cash used in operating activities:
Share-based compensation	2,375	3,126	835
Depreciation	1,118	1,302	1,617
Financial income, net (mainly exchange differences)	417	171	378
Changes in accrued liability for employee rights upon retirement	133	(494)	(10)
Gain on amounts funded in respect of employee rights upon retirement	(100)	(28)	(58)
Gain on sale of fixed assets	(51)
Loss on extinguishment of convertible notes	831
Amortization of debt issuance costs and debt discount	2,673	3,470	2,991
Changes in operating assets and liabilities:
Increase (decrease) in contracts liability (including non-current portion)	13,230	(26,205)	(9,580)
Decrease (increase) in accounts receivable and other assets	(1,032)	2,091	188
Changes in right of use assets	241	95	(110)
Decrease (increase) in inventories	(4,872)	(4,927)	414
Increase in accounts payable and accruals	2,385	2,274	2,735
Decrease in other long term liabilities	(51)	(458)	(482)
Net cash used in operating activities	(10,285)	(26,106)	(19,358)
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in bank deposits	(37,835)	(20,000)
Proceeds from sale of short-term deposits	57,835
Purchase of property and equipment	(1,459)	(655)	(627)
Proceeds from sale of property and equipment	53
Decrease (increase) in restricted deposit	436	384	(259)
Amounts funded in respect of employee rights upon retirement, net	(109)	319	3
Net cash provided by (used in) investing activities	18,921	(19,952)	(883)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment for convertible notes redemption and transactions costs	(30,036)
Payment for promissory note	(4,086)	(215)
Proceeds from issuance of common stock and warrants, net	37,625	41,343
Proceeds from issuance of common stock under the Sales Agreement, net	8,575	4,867
Exercise of warrants		472
Net cash provided by financing activities	12,078	46,467
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	6	64	225
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	20,720	473	(20,016)
BALANCE OF CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	18,265	17,792	37,808
BALANCE OF CASH AND CASH EQUIVALENTS AT END OF YEAR	38,985	18,265	17,792
SUPPLEMENTARY INFORMATION ON INVESTING AND FINANCING ACTIVITIES NOT INVOLVING CASH FLOWS:
Purchase of property and equipment	94	317	98
Right of use assets obtained in exchange for new operating lease liabilities	309	632	388
SUPPLEMENTARY DISCLOSURE ON CASH FLOWS
Interest paid	3,410	4,344	4,344
Interest received	$ 379	$ 438	$ 407