BASIS OF PRESENTATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other liabilities	$ 2,029,159		$ 1,859,254
Net income	18,275	$ 58,339
Restatement Adjustment | Reinsurance Allowances Error Correction
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Other liabilities	6,200
Other operating expense	6,200
Net income	$ (4,900)