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CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Accumulated Deficit | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 1,802,424 | $ 691 | $ 3,500,292 | $ (20,225) | $ (203,996) | $ (1,667,314) | $ 192,976
Balance (in shares) at Dec. 31, 2010 |  |  |  |  | (5,841,087) |  |
Balance (in shares) at Dec. 31, 2010 |  | 69,071,027 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (2,941) |  |  |  | (2,941) |  |
Treasury stock purchased (in shares) |  |  |  |  | (157,756) |  |
Options exercised | 526 |  | 526 |  |  |  |
Options exercised (in shares) |  | 32,545 |  |  |  |  |
Shares issued in employee stock purchase plan | 1,887 | 1 | 1,886 |  |  |  |
Shares issued in employee stock purchase plan (in shares) |  | 153,489 |  |  |  |  |
Stock-based compensation, net of forfeitures | 20,153 | 12 | 20,006 |  |  |  | 135
Stock-based compensation, net of forfeitures (in shares) |  | 1,149,949 |  |  |  |  |
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  | (144,746) |  |
Income tax benefit from stock-based compensation expense | (1,092) |  | (1,092) |  |  |  |
Net proceeds from sale of Partnership units, net of tax | 216,094 |  | 123,904 |  |  |  | 92,190
Cash distribution to noncontrolling unitholders of the Partnership | (39,870) |  |  |  |  |  | (39,870)
Other | (189) |  | (190) |  |  |  | 1
Comprehensive income (loss): |  |  |  |  |  |  |
Net income (loss) | (339,618) |  |  |  |  | (340,608) | 990
Derivatives gain (loss), net of reclassifications to earnings and tax | (2,126) |  |  | 1,490 |  |  | (3,616)
Adjustments from changes in ownership of Partnership | 1,184 |  |  | 1,184 |  |  |
Amortization of terminated interest rate swaps, net of tax | 20,267 |  |  | 20,267 |  |  |
Foreign currency translation adjustment | 3,343 |  |  | 3,343 |  |  |
Balance at Dec. 31, 2011 | 1,680,042 | 704 | 3,645,332 | 6,059 | (206,937) | (2,007,922) | 242,806
Balance (in shares) at Dec. 31, 2011 |  |  |  |  | (6,143,589) |  |
Balance (in shares) at Dec. 31, 2011 |  | 70,407,010 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (2,422) |  |  |  | (2,422) |  |
Treasury stock purchased (in shares) |  |  |  |  | (157,233) |  |
Options exercised | 562 |  | 562 |  |  |  |
Options exercised (in shares) |  | 34,285 |  |  |  |  |
Shares issued in employee stock purchase plan | 1,635 | 1 | 1,634 |  |  |  |
Shares issued in employee stock purchase plan (in shares) |  | 132,784 |  |  |  |  |
Stock-based compensation, net of forfeitures | 15,970 | 8 | 15,373 |  |  |  | 589
Stock-based compensation, net of forfeitures (in shares) |  | 717,151 |  |  |  |  |
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  | (75,604) |  |
Income tax benefit from stock-based compensation expense | (1,345) |  | (1,345) |  |  |  |
Net proceeds from sale of Partnership units, net of tax | 85,122 |  | 49,202 |  |  |  | 35,920
Cash distribution to noncontrolling unitholders of the Partnership | (57,084) |  |  |  |  |  | (57,084)
Comprehensive income (loss): |  |  |  |  |  |  |
Net income (loss) | (37,169) |  |  |  |  | (39,486) | 2,317
Derivatives gain (loss), net of reclassifications to earnings and tax | 5,879 |  |  | 6,781 |  |  | (902)
Adjustments from changes in ownership of Partnership | 360 |  |  | 360 |  |  |
Amortization of terminated interest rate swaps, net of tax | 6,947 |  |  | 6,947 |  |  |
Foreign currency translation adjustment | 3,762 |  |  | 3,762 |  |  |
Balance at Dec. 31, 2012 | 1,702,259 | 713 | 3,710,758 | 23,909 | (209,359) | (2,047,408) | 223,646
Balance (in shares) at Dec. 31, 2012 | (6,376,426) |  |  |  | (6,376,426) |  |
Balance (in shares) at Dec. 31, 2012 |  | 71,291,230 |  |  |  |  |
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (4,539) |  |  |  | (4,539) |  |
Treasury stock purchased (in shares) | (173,267) |  |  |  | (173,267) |  |
Options exercised | 8,321 | 4 | 8,317 |  |  |  |
Options exercised (in shares) |  | 459,416 |  |  |  |  |
Shares issued in employee stock purchase plan | 1,632 | 1 | 1,631 |  |  |  |
Shares issued in employee stock purchase plan (in shares) |  | 66,259 |  |  |  |  |
Stock-based compensation, net of forfeitures | 16,248 | 7 | 15,509 |  |  |  | 732
Stock-based compensation, net of forfeitures (in shares) |  | 683,868 |  |  |  |  |
Stock-based compensation, net of forfeitures (in shares) |  |  |  |  | (32,375) |  |
Income tax benefit from stock-based compensation expense | 1,782 |  | 1,782 |  |  |  |
Adjustments from changes in ownership of Partnership | (17,665) |  | 31,573 |  |  |  | (49,238)
Cash distribution to noncontrolling unitholders of the Partnership | (61,959) |  |  |  |  |  | (61,959)
Other | (141) |  | (141) |  |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income (loss) | 155,742 |  |  |  |  | 123,164 | 32,578
Derivatives gain (loss), net of reclassifications to earnings and tax | 5,207 |  |  | (372) |  |  | 5,579
Adjustments from changes in ownership of Partnership | (703) |  |  | (703) |  |  |
Amortization of terminated interest rate swaps, net of tax | 2,713 |  |  | 2,713 |  |  |
Foreign currency translation adjustment | 4,531 |  |  | 4,531 |  |  |
Balance at Dec. 31, 2013 | $ 1,813,428 | $ 725 | $ 3,769,429 | $ 30,078 | $ (213,898) | $ (1,924,244) | $ 151,338
Balance (in shares) at Dec. 31, 2013 | (6,582,068) |  |  |  | (6,582,068) |  |
Balance (in shares) at Dec. 31, 2013 |  | 72,500,773 |  |  |  |  |

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