CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
Balance at the beginning of the period at Dec. 31, 2014	$ 396	$ 2,838,013	$ (606,934)	$ (7,712)		$ 3,743	$ 2,227,506
Balance at the beginning of the period, shares at Dec. 31, 2014	39,638,094
Increase (Decrease) in Stockholders' Equity
Net income (loss)			(105,959)				(105,959)
Preferred dividend payment on behalf of REIT subsidiary						29	29
Interest rate swaps, net of tax				512			512	[1]
Capitalized swap interest, net of tax benefit				(59)			(59)	[2]
Stock plan activity	$ 1	1,696	(1)				1,696
Stock plan activity, shares	69,241
Balance at the end of the period at Mar. 31, 2015	$ 397	2,839,709	(712,894)	(7,259)		3,772	2,123,725
Balance at the end of the period, shares at Mar. 31, 2015	39,707,335
Balance at the beginning of the period at Dec. 31, 2015	$ 398	2,847,823	(480,215)	(7,889)		3,772	2,363,889
Balance at the beginning of the period, shares at Dec. 31, 2015	39,714,838
Increase (Decrease) in Stockholders' Equity
Net income (loss)			143,765				143,765
Interest rate swaps, net of tax				(9,808)			(9,808)	[1]
Capitalized swap interest, net of tax benefit				(63)			(63)	[2]
Stock plan activity		3,520					3,520
Stock plan activity, shares	117,338
Treasury stock activity					$ (840)		(840)
Treasury stock activity, shares					(8,390)
Balance at the end of the period at Mar. 31, 2016	$ 398	$ 2,851,343	$ (336,450)	$ (17,760)	$ (840)	$ 3,772	$ 2,500,463
Balance at the end of the period, shares at Mar. 31, 2016	39,832,176				(8,390)

[1] Amount is shown net of deferred tax benefit of $5.3 million and deferred tax expense of $0.1 million for the three months ended March 31, 2016 and 2015, respectively.

[2] Net of deferred tax benefit of $0.1 million for both the three months ended March 31, 2016 and 2015.