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SHAREHOLDERS' EQUITY (Summary Of Stock Options And RSUs Granted Separated Into Ranges Of Exercise Price) (Details)	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options and RSUs outstanding | shares	6,548,715
Options and RSUs exercisable | shares	4,017,763
RSUs 0.0 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	$ 0.0
Exercise price, upper range limit	$ 0.0
Options and RSUs outstanding | shares	309,986
Outstanding options, Weighted average exercise price	$ 0.00
Options and RSUs exercisable | shares
Exercisable options, Weighted average exercise price	$ 0.00
0.01-2.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	0.01
Exercise price, upper range limit	$ 2.00
Options and RSUs outstanding | shares	883,864
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	10 months 13 days
Outstanding options, Weighted average exercise price	$ 1.24
Options and RSUs exercisable | shares	853,245
Exercisable options, Remaining contractual life (in years)	8 months 26 days
Exercisable options, Weighted average exercise price	$ 1.22
2.01-4.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	2.01
Exercise price, upper range limit	$ 4.00
Options and RSUs outstanding | shares	4,291,793
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	4 years 1 month 9 days
Outstanding options, Weighted average exercise price	$ 2.62
Options and RSUs exercisable | shares	2,155,157
Exercisable options, Remaining contractual life (in years)	3 years 3 months 3 days
Exercisable options, Weighted average exercise price	$ 2.70
4.01-6.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	4.01
Exercise price, upper range limit	$ 6.00
Options and RSUs outstanding | shares	302,654
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	2 years 8 months 8 days
Outstanding options, Weighted average exercise price	$ 4.59
Options and RSUs exercisable | shares	248,943
Exercisable options, Remaining contractual life (in years)	2 years 4 months 13 days
Exercisable options, Weighted average exercise price	$ 4.67
6.01-8.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	6.01
Exercise price, upper range limit	$ 8.00
Options and RSUs outstanding | shares	15,000
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	1 year 9 months
Outstanding options, Weighted average exercise price	$ 6.21
Options and RSUs exercisable | shares	15,000
Exercisable options, Remaining contractual life (in years)	1 year 9 months
Exercisable options, Weighted average exercise price	$ 6.21
8.01-10.00 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	8.01
Exercise price, upper range limit	$ 10.00
Options and RSUs outstanding | shares	365,668
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	1 year 3 months 21 days
Outstanding options, Weighted average exercise price	$ 8.92
Options and RSUs exercisable | shares	365,668
Exercisable options, Remaining contractual life (in years)	1 year 3 months 21 days
Exercisable options, Weighted average exercise price	$ 8.92
10.01-13.04 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise price, lower range limit	10.01
Exercise price, upper range limit	$ 13.04
Options and RSUs outstanding | shares	379,750
Outstanding options, Weighted average remaining contractual life (years) for outstanding options	1 month 20 days
Outstanding options, Weighted average exercise price	$ 12.80
Options and RSUs exercisable | shares	379,750
Exercisable options, Remaining contractual life (in years)	1 month 20 days
Exercisable options, Weighted average exercise price	$ 12.80

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

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