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CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands | Common Stock | Additional Paid-in Capital | Accumulated Other Comprehensive Income (Loss) | Treasury Stock | Accumulated Deficit | Noncontrolling Interest | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2013 | $ 725 | $ 3,769,429 | $ 30,078 | $ (213,898) | $ (1,924,244) | $ 151,338 | $ 1,813,428
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased |  |  |  | (6,315) |  |  | (6,315)
Options exercised | 6 | 10,761 |  |  |  |  | 10,767
Cash dividends |  |  |  |  | (19,990) |  | (19,990)
Shares issued in employee stock purchase plan |  | 897 |  |  |  |  | 897
Stock-based compensation, net of forfeitures | 4 | 10,692 |  |  |  | 607 | 11,303
Income tax benefit from stock-based compensation expense |  | 7,684 |  |  |  |  | 7,684
Net proceeds from the sale of Partnership units, net of tax |  | 74,521 |  |  |  | 51,212 | 125,733
Cash distribution to noncontrolling unitholders of the Partnership |  |  |  |  |  | (35,291) | (35,291)
Redemption of convertible debt | 1 | (234,219) |  | 219,211 |  |  | (15,007)
Shares acquired from exercise of call options |  | 89,407 |  | (89,407) |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income |  |  |  |  | 44,973 | 10,784 | 55,757
Derivatives loss, net of reclassifications to earnings and tax |  |  | (1,410) |  |  | (810) | (2,220)
Adjustments from changes in ownership of Partnership |  |  | 65 |  |  |  | 65
Amortization of terminated interest rate swaps, net of tax |  |  | 1,529 |  |  |  | 1,529
Foreign currency translation adjustment |  |  | (269) |  |  |  | (269)
Balance at Jun. 30, 2014 | 736 | 3,729,172 | 29,993 | (90,409) | (1,899,261) | 177,840 | 1,948,071
Balance at Dec. 31, 2014 | 738 | 3,715,586 | 15,865 | (68,532) | (1,866,397) | 155,785 | 1,953,045
Increase (Decrease) in Stockholders' Equity |  |  |  |  |  |  |
Treasury stock purchased |  |  |  | (3,736) |  |  | (3,736)
Options exercised | 1 | 1,004 |  |  |  |  | 1,005
Cash dividends |  |  |  |  | (20,743) |  | (20,743)
Shares issued in employee stock purchase plan |  | 910 |  |  |  |  | 910
Stock-based compensation, net of forfeitures | 6 | 9,195 |  |  |  | 521 | 9,722
Income tax benefit from stock-based compensation expense |  | 569 |  |  |  |  | 569
Adjustments from changes in ownership of Partnership |  | 17,662 |  |  |  | (27,634) | (9,972)
Net proceeds from the sale of Partnership units, net of tax |  | 1,268 |  |  |  |  | 1,268
Cash distribution to noncontrolling unitholders of the Partnership |  |  |  |  |  | (40,491) | (40,491)
Shares issued for exercise of warrants |  | (88) |  | 88 |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income |  |  |  |  | 30,753 | 18,121 | 48,874
Derivatives loss, net of reclassifications to earnings and tax |  |  | (1,915) |  |  | (1,313) | (3,228)
Adjustments from changes in ownership of Partnership |  |  | (223) |  |  |  | (223)
Amortization of terminated interest rate swaps, net of tax |  |  | 1,225 |  |  |  | 1,225
Foreign currency translation adjustment |  |  | (6,703) |  |  |  | (6,703)
Balance at Jun. 30, 2015 | $ 745 | $ 3,746,106 | $ 8,249 | $ (72,180) | $ (1,856,387) | $ 104,989 | $ 1,931,522

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