EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2014
EARNINGS PER SHARE OF COMMON STOCK, BASIC AND DILUTED [Line Items]
Common Stock, Shares, Issued	52,083,859				100				52,083,859	100		51,941,236
Net income	$ 36,607	$ 4,653	$ 9,454	$ 59,076	$ 30,318	$ 434	$ 14,951	$ 53,492	$ 109,790	$ 99,195	$ 96,509
Weighted Average Number of Shares Outstanding, Basic									52,364,000	52,319,000	52,319,000
Earnings Per Share, Basic	$ 0.70	$ 0.09	$ 0.18	$ 1.13					$ 2.10	$ 1.90	$ 1.84
Dilutive Securities, Effect on Basic Earnings Per Share									0	0	0
Weighted Average Number Diluted Shares Outstanding Adjustment									582,000	0	0
Net Income (Loss) Available to Common Stockholders, Diluted									$ 109,790	$ 99,195	$ 96,509
Weighted Average Number of Shares Outstanding, Diluted									52,946,000	52,319,000	52,319,000
Earnings Per Share, Diluted	$ 0.69	$ 0.09	$ 0.18	$ 1.13					$ 2.07	$ 1.90	$ 1.84