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CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands | Total | Convertible Perpetual Preferred Stock | Common Stock | Additional Paid-In Capital | Treasury Stock | Accumulated Deficit | Noncontrolling Interest
--- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance at Dec. 31, 2012 | $ 3,862,455 | $ 8 | $ 476 | $ 5,228,019 | $ (8,602) | $ (2,851,048) | $ 1,493,602
Beginning Balance (in shares) at Dec. 31, 2012 | 490,359 |  | 490,359 |  |  |  |
Beginning Balance (in shares) at Dec. 31, 2012 | 7,650 | 7,650 |  |  |  |  |
Distributions to noncontrolling interest owners | (98,716) |  |  |  |  |  | (98,716)
Purchase of treasury stock | (27,196) |  |  |  | (27,196) |  |
Retirement of treasury stock | 0 |  |  | (27,196) | 27,196 |  |
Stock purchase - retirement plans, net of distributions (in shares) |  |  | (94) |  |  |  |
Stock purchase - retirement plans, net of distributions | 480 |  |  | 974 | (494) |  |
Stock-based compensation | 73,612 |  |  | 73,612 |  |  |
Issuance of restricted stock awards, net of cancellations (in shares) |  |  | (649) |  |  |  |
Issuance of restricted stock awards, net of cancellations | 0 |  | 7 | (7) |  |  |
Net loss | (506,574) |  |  |  |  | (499,776) | (6,798)
Convertible perpetual preferred stock dividends | (27,763) |  |  |  |  | (27,763) |
Ending Balance at Jun. 30, 2013 | $ 3,276,298 | $ 8 | $ 483 | $ 5,275,402 | $ (9,096) | $ (3,378,587) | $ 1,388,088
Ending Balance (in shares) at Jun. 30, 2013 | 489,616 |  | 489,616 |  |  |  |
Ending Balance (in shares) at Jun. 30, 2013 | 7,650 | 7,650 |  |  |  |  |

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