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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SHAREHOLDERS' EQUITY (Share Option Plans) (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jul. 31, 2018	Jun. 29, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			508,493	580,185	2,278,089	5,878,270
RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted			977,667	818,856	359,643
Awards outstanding			1,599,296	1,245,889	1,009,184	773,200
Old Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			26,000	57,000
2013 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding			483,000	523,000
2013 Plan [Member] \| Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Vesting percentage	25.00%
2013 Plan [Member] \| Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 1,100
2013 Plan [Member] \| Performance-based RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Vesting percentage	65.00%
Non-option equity awards granted	50
2013 Plan [Member] \| RSU's [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding			1,600,000	1,200,000
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			978,000	819,000
2013 Plan [Member] \| Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost		$ 4,500
2013 Plan [Member] \| Chief Executive Officer [Member] \| Time Vested Restricted Shares Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Vesting percentage	33.00%
Non-option equity awards granted	107,000	85,000
Compensation cost	$ 3,900
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	72,000	97,000
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]
Vesting period	3 years
Vesting percentage	33.00%
Non-option equity awards granted	14,000	12,000
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]
Vesting period	2 years
Vesting percentage	50.00%
Non-option equity awards granted	3,000	3,000
Compensation cost	$ 600	$ 600
2013 Plan [Member] \| New other directors [Member] \| Time Vested Restricted Shares Units [Member] \| Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2013 Plan [Member] \| New other directors [Member] \| Time Vested Restricted Shares Units [Member] \| First Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%