CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (6,523,000)	$ (18,276,000)	$ (26,457,000)
Adjustments required to reconcile net loss to net cash used in operating activities:
Share based compensation	3,126,000	835,000	514,000
Depreciation	1,302,000	1,617,000	1,671,000
Financial expenses, net (mainly exchange differences)	171,000	378,000	20,000
Changes in accrued liability for employee rights upon retirement	(494,000)	(10,000)	(18,000)
Gain on amounts funded in respect of employee rights upon retirement	(28,000)	(58,000)	(46,000)
Net loss in connection with conversions of convertible notes			213,000
Amortization of debt issuance costs and debt discount	3,470,000	2,991,000	2,602,000
Issuance of shares for interest payment in connection with conversions of convertible notes			234,000
Changes in operating assets and liabilities:
Increase (decrease) in contracts liability (including non-current portion)	(26,205,000)	(9,580,000)	17,880,000
Decrease (increase) in accounts receivable and other assets	2,091,000	188,000	(3,099,000)
Changes in right of use assets	95,000	(110,000)	0
Decrease (increase) in inventories	(4,927,000)	414,000	(736,000)
Increase (decrease) in accounts payable and accruals	2,274,000	2,735,000	(761,000)
Increase (decrease) in other long term liabilities	(458,000)	(482,000)	241,000
Net cash used in operating activities	(26,106,000)	(19,358,000)	(7,742,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Increase in bank deposits	(20,000,000)
Purchase of property and equipment	(655,000)	(627,000)	(686,000)
Decrease (increase) in restricted deposit	384,000	(259,000)	62,000
Amounts funded in respect of employee rights upon retirement, net	319,000	3,000	33,000
Net cash used in investing activities	(19,952,000)	(883,000)	(591,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net payment for convertible notes			(4,752,000)
Payment for promissory note	(215,000)
Proceeds from issuance of common stock and warrants, net of issuance cost	41,343,000
Proceeds from issuance of common stock under the Sales Agreement, net	4,867,000
Exercise of warrants	472,000
Net cash (used in) provided by financing activities	46,467,000		(4,752,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS	64,000	225,000	(270,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	473,000	(20,016,000)	(13,355,000)
BALANCE OF CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	17,792,000	37,808,000	51,163,000
BALANCE OF CASH AND CASH EQUIVALENTS AT END OF YEAR	18,265,000	17,792,000	37,808,000
SUPPLEMENTARY INFORMATION ON INVESTING AND FINANCING ACTIVITIES NOT INVOLVING CASH FLOWS:
Purchase of property and equipment	317,000	98,000	225,000
Convertible note conversions			2,285,000
Right of use assets obtained in exchange for new operating lease liabilities	632,000	388,000
SUPPLEMENTARY DISCLOSURE ON CASH FLOWS
Interest paid	4,344,000	4,344,000	4,585,000
Interest received	$ 438,000	$ 407,000	$ 395,000