EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Basic earnings per share:
Net earnings from continuing operations	$ 25,905	$ 3,447	$ 13,494
Less: earnings allocated to unvested restricted stock	(500)	(280)	(326)
Net earnings from continuing operations allocated to common shares	25,405	3,167	13,168
Net loss from discontinued operations allocated to common shares	(804)	(338)
Net earnings allocated to common shares	24,601	2,829	13,168
Weighted-average basic shares and unvested restricted stock outstanding	45,799	46,069	37,391
Less: weighted-average unvested restricted stock outstanding (in shares)	(1,148)	(1,743)	(1,594)
Weighted-average basic shares outstanding	44,651	44,326	35,797
Net earnings from continuing operations (in dollars per share)	$ 0.57	$ 0.07	$ 0.37
Net loss from discontinuing operations (in dollars per share)	$ (0.02)	$ (0.01)
Net earnings (in dollars per share)	$ 0.55	$ 0.06	$ 0.37
Diluted earnings per share:
Net earnings from continuing operations allocated to common shares	25,405	3,167	13,168
Net loss from discontinued operations allocated to common shares	(804)	(338)
Net earnings allocated to common shares	$ 24,601	$ 2,829	$ 13,168
Weighted-average basic shares outstanding	44,651	44,326	35,797
Net earnings from continuing operations (in dollars per share)	$ 0.57	$ 0.07	$ 0.37
Net loss from discontinuing operations (in dollars per share)	$ (0.02)	$ (0.01)
Net earnings (in dollars per share)	$ 0.55	$ 0.06	$ 0.37