CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Noncontrolling Interest [Member]	Total
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
Issuances of treasury stock					$ (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)
Balance at the beginning of the period at Dec. 31, 2016	$ 398	2,853,269	(277,912)	(6,786)	$ (1,231)	3,772	2,571,510
Balance at the beginning of the period, shares at Dec. 31, 2016	39,802,064				(12,061)
Increase (Decrease) in Stockholders' Equity
Net income (loss)			5,659				5,659
Interest rate swaps, net of tax				433			433	[1]
Capitalized swap interest, net of tax benefit				(75)			(75)	[2]
Stock plan activity	$ 3	8,841					8,844
Stock plan activity, shares	249,378
Exercise of warrants	$ 3	30,932					30,935
Exercise of warrants (in shares)	272,598
Balance at the end of the period at Mar. 31, 2017	$ 404	$ 2,893,042	$ (272,253)	$ (6,428)	$ (1,231)	$ 3,772	$ 2,617,306
Balance at the end of the period, shares at Mar. 31, 2017	40,324,040				(12,061)

[1] Amounts are shown net of deferred tax expense of $0.3 million and deferred tax benefit of $5.3 million for the three months ended March 31, 2017 and 2016, respectively.

[2] Net of deferred tax benefit of $0.1 million for both the three months ended March 31, 2017 and 2016, respectively.