SHAREHOLDERS’ EQUITY AND SHARE-BASED COMPENSATION RSU (Details)	6 Months Ended
Jun. 30, 2018 $ / shares shares
Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value \| $ / shares	$ 25.23
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Restricted shares and restricted share units outstanding, beginning of period (in shares)	356,509
Restricted shares and restricted share units granted (in shares)	305,282
Restricted shares and restricted share units issued (in shares)	(88,043)
Restricted shares and restricted share units forfeited/canceled (in shares)	(96,853)
Restricted shares and restricted share units outstanding, end of period (in shares)	476,895
Service-Based \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, alternate award vesting period	2 years
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Restricted shares and restricted share units outstanding, end of period (in shares)	475,000
Service-Based \| Minimum \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	3 years
Service-Based \| Minimum \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	1 year
Service-Based \| Maximum \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Service-Based \| Maximum \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Performance-Based \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Restricted shares and restricted share units outstanding, end of period (in shares)	2,000
Performance-Based \| Minimum \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Attainment above threshold performance levels, vesting percentage	50.00%
Performance-Based \| Minimum \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Attainment above threshold performance levels, vesting percentage	80.00%
Performance-Based \| Maximum \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Attainment above threshold performance levels, vesting percentage	200.00%
Performance-Based \| Maximum \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Attainment above threshold performance levels, vesting percentage	150.00%
Performance-Based, Vesting Period One \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Performance-Based, Vesting Period One \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	33.00%
Performance-Based, Vesting Period Two \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Performance-Based, Vesting Period Two \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	33.00%
Performance-Based, Vesting Period Three \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%
Performance-Based, Vesting Period Three \| Restricted Stock
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	33.00%
Performance-Based, Vesting Period Four \| Employee and non-employee stock options
Schedule of Share-based compensation, Restricted Stock and Restricted Stock units activity [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage	25.00%

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The weighted average fair value at grant date for nonvested non-option equity-based awards issued during the period.

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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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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Percentage of vesting of share-based compensation awards.

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