RELEVANT STOCK OPTION INFORMATION (Details 4) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from stock option exercises	$ 197	$ 281	$ 184
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock options vested based on grant date fair value	22	21	85
Intrinsic value of stock options exercised	404	883	1,525
Cash received from stock option exercises	279	396	1,024
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	$ 114	$ 248	$ 429
Weighted average grant date fair value of options granted (per share)	$ 0		$ 13.46

Amount of tax benefit from exercise of option under share-based payment arrangement.

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Amount of cash inflow from exercise of option under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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-Publisher FASB
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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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