The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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.

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Net number of non-option equity instruments granted to participants.

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Gross number of share options (or share units) granted during the period.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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SHAREHOLDERS' EQUITY (Share Option Plans) (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 29, 2017	Jun. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted				207,890	100,000
Options granted, exercise price			$ 0.00	$ 12.19	$ 16.92
Options outstanding			580,185	2,278,089	5,878,270	7,537,219
Options outstanding, exercise price			$ 9.64	$ 9.92	$ 6.84	$ 6.37
Shares exercised			1,611,489	3,649,754	1,620,056
RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted			818,856	359,643	783,700
Awards outstanding			1,245,889	1,009,184	773,200
Old Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			57,000	640,000
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			523,000	1,635,000
2013 Plan [Member] \| RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding			1,246,000	1,009,000
2013 Plan [Member] \| CEO, Chairman and directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
2013 Plan [Member] \| Employees and directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years	3 years
Awards granted			819,000	568,000
2013 Plan [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted		198,000
Compensation cost	$ 4,500	$ 1,360
2013 Plan [Member] \| Chief Executive Officer [Member] \| Time Vested Restricted Shares Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option equity awards granted	85,000	31,000
2013 Plan [Member] \| Chief Executive Officer [Member] \| Performance-based RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option equity awards granted	97,000	16,000
2013 Plan [Member] \| Chairman of the board of directors [Member] \| Time Vested Restricted Shares Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option equity awards granted	12,000	25,000
Compensation cost	$ 300	$ 300
2013 Plan [Member] \| New other directors [Member] \| Time Vested Restricted Shares Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option equity awards granted	3,000	3,000
Compensation cost	$ 600
2013 Plan [Member] \| New other directors and new external director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost		$ 127
2013 Plan [Member] \| New external director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted		10,000
Israeli Banks, Warrants [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares exercised			500,000	500,000
Israeli Banks, Warrants [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, exercise price			$ 10.5
Israeli Banks, Warrants [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, exercise price			$ 92.55