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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, 2013 $ 396 $ 2,829,813 $ (583,403) $ (8,222)   $ 6,562 $ 2,245,146
Balance at the beginning of the period, shares at Dec. 31, 2013 39,576,344            
Increase (Decrease) in Stockholders' Equity              
Net income (loss)     (23,531)     11 (23,520)
Preferred dividend payment on behalf of subsidiary           (12) (12)
Interest rate swaps, net of tax       1,003     1,003
Capitalized swap interest, net of tax benefit       (493)     (493)
Stock plan activity   8,200         8,200
Stock plan activity, shares 61,750            
Balance at the end of the period at Dec. 31, 2014 $ 396 2,838,013 (606,934) (7,712)   3,743 2,227,506
Balance at the end of the period, shares at Dec. 31, 2014 39,638,094            
Increase (Decrease) in Stockholders' Equity              
Distribution to noncontrolling interest           (2,818) (2,818)
Net income (loss)     126,719       126,719
Interest rate swaps, net of tax       40     40
Capitalized swap interest, net of tax benefit       (217)     (217)
Stock plan activity $ 2 9,810         9,812
Stock plan activity, shares 76,744            
Balance at the end of the period at Dec. 31, 2015 $ 398 2,847,823 (480,215) (7,889)   3,772 2,363,889
Balance at the end of the period, shares at Dec. 31, 2015 39,714,838            
Increase (Decrease) in Stockholders' Equity              
Adjustment to noncontrolling interest           29 29
Net income (loss)     202,303     23 202,326
Preferred dividend payment on behalf of subsidiary           (23) (23)
Interest rate swaps, net of tax       2,196     2,196
Pension adjustment, net of tax       (890)     (890)
Capitalized swap interest, net of tax benefit       (203)     (203)
Issuance of management warrants   1,000         1,000
Acquisition of noncontrolling partner's interest   (5,000)         (5,000)
Stock plan activity   9,446         9,446
Stock plan activity, shares 87,226            
Treasury stock activity         $ (1,231)   (1,231)
Treasury stock activity, shares         12,061    
Balance at the end 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 end of the period, shares at Dec. 31, 2016 39,802,064       12,061