SHAREHOLDER'S EQUITY (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Dividends And Shares Activitiy [Line Items]
Dvidend Equivalent liability - short term	$ 604		$ 830
Dvidend Equivalent liability - long term	1,215		1,331
Total Dividend Equivalent Liability	1,819		2,161
Dividend payments	12,441	$ 2,916
Amount recorded as financing activity	(3,463)	(2,436)	(2,565)
The total cost to repurchase	$ (19,379)		(10,675)
Dividends paid on preferred stock			2,574
Employee stock purchase plan, authorized shares	1,000
Stock Issued During Period Value Employee Stock Purchase Plan	$ 321		$ 182
Total Non cash compensation expense recognized	$ 3,097	1,085
Espp Shares Market Value	85.00%
Espp Share Discount	15.00%
PaymentsOfDividendsAbstract
Payments of Dividends, Common Stock	$ 12,441	2,916
PaymentsOfDividendsPreferredStockAndPreferenceStock	0	$ 550
Treasury Stock Line Items
Stock Repurchase Prgram Authorized Amount	$ 100,000
Average Cost per share of Acquired Treasury Shares	$ 10.57
ESPP [Member]
Dividends And Shares Activitiy [Line Items]
Stock Issued During Period Shares Employee Stock Purchase Plans	39	15
Total Non cash compensation expense recognized	$ 57	$ 32

Dividend equivalent liability non current include the right, upon vesting, to receive a cash payment equal to the aggregate amount of dividends, if any, that holders would have received on the shares of common stock underlying their RSUs if such RSUs had been vested during the period

No definition available.