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SHAREHOLDERS' EQUITY (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Vesting period	4 years
Expiration period	10 years
Ordinary shares reserved for issuance	8,639,000
Ordinary shares available for future grant	1,133,883
Total intrinsic value of options exercised	$ 770	$ 626	$ 4,617
Total unrecognized compensation cost	$ 1,662	$ 2,053	$ 1,980
Additional Shares authorized		16,256,688
Minimum [Member]
Expiration period	6 years
Maximum [Member]
Expiration period	10 years
Stock Option [Member]
Weighted average grant date fair value of options granted	$ 1.06	$ 1.39	$ 1.79
RSU [Member]
Weighted average grant date fair value of options granted	$ 2.11	$ 2.79	$ 3.23
Weighted average period	1 year
Total unrecognized compensation cost	$ 1,730

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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