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SHAREHOLDERS' EQUITY (Schedule of Options Outstanding) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Shares upon exercise of options outstanding as of December 31, 2019	1,134,256	1,453,741	1,736,143	2,189,297
Weighted average remaining contractual life	2 years 8 months 1 day
Shares upon exercise of options exercisable as of December 31, 2019	1,065,498	1,240,005	1,281,665
$23.31-27.58 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices, minimum	$ 23.31
Exercise Prices, maximum	$ 27.58
Shares upon exercise of options outstanding as of December 31, 2019	49,500
Weighted average remaining contractual life	1 year 7 months 28 days
Shares upon exercise of options exercisable as of December 31, 2019	49,500
$15.2-17.07 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices, minimum	$ 15.2
Exercise Prices, maximum	$ 17.07
Shares upon exercise of options outstanding as of December 31, 2019	46,936
Weighted average remaining contractual life	1 year 7 days
Shares upon exercise of options exercisable as of December 31, 2019	46,936
$10.0-14.68 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices, minimum	$ 10.0
Exercise Prices, maximum	$ 14.68
Shares upon exercise of options outstanding as of December 31, 2019	140,150
Weighted average remaining contractual life	2 years 8 months 26 days
Shares upon exercise of options exercisable as of December 31, 2019	140,150
$5.01-9.7 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices, minimum	$ 5.01
Exercise Prices, maximum	$ 9.7
Shares upon exercise of options outstanding as of December 31, 2019	360,605
Weighted average remaining contractual life	2 years 3 months 7 days
Shares upon exercise of options exercisable as of December 31, 2019	319,253
$0.1-4.95 [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices, minimum	$ 0.1
Exercise Prices, maximum	$ 4.95
Shares upon exercise of options outstanding as of December 31, 2019	537,065
Weighted average remaining contractual life	3 years 1 month 28 days
Shares upon exercise of options exercisable as of December 31, 2019	509,659

X

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The ceiling 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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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