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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Thousands, 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, 2011 | $ 1,680,042 | $ 704 | $ 3,645,332 | $ 6,059 | $ (206,937) | $ (2,007,922) | $ 242,806
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (1,892) |  |  |  | (1,892) |  |
Options exercised | 119 |  | 119 |  |  |  |
Shares issued in employee stock purchase plan | 1,280 | 1 | 1,279 |  |  |  |
Stock-based compensation, net of forfeitures | 12,327 | 7 | 11,836 |  |  |  | 484
Income tax benefit from stock-based compensation expense | (2,253) |  | (2,253) |  |  |  |
Net proceeds from sale of Partnership units, net of tax | 85,122 |  | 49,202 |  |  |  | 35,920
Cash distribution to noncontrolling unitholders of the Partnership | (41,975) |  |  |  |  |  | (41,975)
Comprehensive income (loss): |  |  |  |  |  |  |
Net income (loss) | (40,265) |  |  |  |  | (33,747) | (6,518)
Derivative gain (loss), net of reclassifications to earnings and tax | 1,650 |  |  | 3,142 |  |  | (1,492)
Adjustments from changes in ownership of Partnership | 360 |  |  | 360 |  |  |
Amortization of terminated interest rate swaps, net of tax | 10,103 |  |  | 10,103 |  |  |
Foreign currency translation adjustment | 921 |  |  | 921 |  |  |
Balance at Sep. 30, 2012 | 1,705,539 | 712 | 3,705,515 | 20,585 | (208,829) | (2,041,669) | 229,225
Balance at Dec. 31, 2012 | 1,702,259 | 713 | 3,710,758 | 23,909 | (209,359) | (2,047,408) | 223,646
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased | (3,594) |  |  |  | (3,594) |  |
Options exercised | 5,975 | 3 | 5,972 |  |  |  |
Shares issued in employee stock purchase plan | 1,213 | 1 | 1,212 |  |  |  |
Stock-based compensation, net of forfeitures | 12,122 | 7 | 11,524 |  |  |  | 591
Income tax benefit from stock-based compensation expense | 960 |  | 960 |  |  |  |
Adjustments from changes in ownership of Partnership | (17,665) |  | 31,573 |  |  |  | (49,238)
Cash distribution to noncontrolling unitholders of the Partnership | (46,244) |  |  |  |  |  | (46,244)
Other | (142) |  | (142) |  |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income (loss) | 128,556 |  |  |  |  | 100,517 | 28,039
Derivative gain (loss), net of reclassifications to earnings and tax | 4,455 |  |  | (168) |  |  | 4,623
Adjustments from changes in ownership of Partnership | (703) |  |  | (703) |  |  |
Amortization of terminated interest rate swaps, net of tax | 1,881 |  |  | 1,881 |  |  |
Foreign currency translation adjustment | 3,851 |  |  | 3,851 |  |  |
Balance at Sep. 30, 2013 | $ 1,792,924 | $ 724 | $ 3,761,857 | $ 28,770 | $ (212,953) | $ (1,946,891) | $ 161,417

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