CALCULATION OF WEIGHTED AVERAGE SHARES OUTSTANDING FOR EARNINGS (LOSS) PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Earnings Per Share [Abstract]
Net income	$ 10,570	$ 11,582	$ 46,555
Basic weighted average shares outstanding	19,346	19,313
Plus unvested restricted stock	64	110
Diluted weighted shares outstanding	19,410	19,423
Earnings (loss) per common share
Basic (in dollars per share)	$ 0.55	$ 0.60
Diluted (in dollars per share)	$ 0.54	$ 0.60