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Equity (Tables) | 12 Months Ended
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Dec. 31, 2014
Stockholders Equity Note [Line Items] |
Preferred Stock Terms | The following table summarizes information about each series of the Company’s convertible perpetual preferred stock outstanding at December 31, 2014:
|  | Convertible Perpetual Preferred Stock
|  | 8.5% |  | 7.0%
Liquidation preference per share |  | $ | 100.00 |  |  | $ | 100.00 |
Annual dividend per share |  | $ | 8.50 |  |  | $ | 7.00 |
Conversion rate per share to common stock |  | 12.4805 |  |  | 12.8791 |
Conversion date to common stock at Company's option(1) |  | February 20, 2014 |  |  | November 20, 2015 |
____________________
(1) | Conversion is dependent on certain factors, including the Company’s stock trading above specified prices for a set period.
Preferred Stock Dividends | Paid and unpaid dividends included in the calculation of income available (loss applicable) to the Company’s common stockholders and the Company’s basic earnings (loss) per share calculation for the years ended December 31, 2014, 2013 and 2012 as presented in the accompanying consolidated statements of operations, are included in the tables below (in thousands):
| Dividends Paid |  | Dividends Unpaid |  | Total
Year Ended December 31, 2014 |  |  |  |  |
8.5% Convertible perpetual preferred stock | $ | 14,078 |  |  | $ | 8,447 |  |  | $ | 22,525 |
6.0% Convertible perpetual preferred stock | 6,500 |  |  | — |  |  | 6,500 |
7.0% Convertible perpetual preferred stock | 18,375 |  |  | 2,625 |  |  | 21,000 |
Total | $ | 38,953 |  |  | $ | 11,072 |  |  | $ | 50,025 |
Year Ended December 31, 2013 |  |  |  |  |
8.5% Convertible perpetual preferred stock | $ | 14,078 |  |  | $ | 8,447 |  |  | $ | 22,525 |
6.0% Convertible perpetual preferred stock | 6,500 |  |  | 5,500 |  |  | 12,000 |
7.0% Convertible perpetual preferred stock | 18,375 |  |  | 2,625 |  |  | 21,000 |
Total | $ | 38,953 |  |  | $ | 16,572 |  |  | $ | 55,525 |
Year Ended December 31, 2012 |  |  |  |  |
8.5% Convertible perpetual preferred stock | $ | 14,078 |  |  | $ | 8,447 |  |  | $ | 22,525 |
6.0% Convertible perpetual preferred stock | 6,500 |  |  | 5,500 |  |  | 12,000 |
7.0% Convertible perpetual preferred stock | 18,375 |  |  | 2,625 |  |  | 21,000 |
Total | $ | 38,953 |  |  | $ | 16,572 |  |  | $ | 55,525 |
Treasury Stock Activity | The following table shows the number of shares withheld for taxes and the associated value of those shares for the years ended December 31, 2014, 2013 and 2012. These shares were accounted for as treasury stock when withheld, and then immediately retired.
| Year Ended December 31,
| 2014 |  | 2013 |  | 2012
| (In thousands)
Number of shares withheld for taxes | 1,034 |  |  | 5,679 |  |  | 1,547 |
Value of shares withheld for taxes | $ | 6,373 |  |  | $ | 30,126 |  |  | $ | 11,312 |
Restricted Stock Activity | Restricted stock activity for the years ended December 31, 2012, 2013 and 2014 was as follows (shares in thousands):
| Number of Shares |  | Weighted- Average Grant Date Fair Value
Unvested restricted shares outstanding at December 31, 2011 | 13,386 |  |  | $ | 9.34 |
Granted | 7,604 |  |  | $ | 7.46 |
Vested | (4,394 | ) |  | $ | 10.73 |
Forfeited / Canceled | (1,268 | ) |  | $ | 8.54 |
Unvested restricted shares outstanding at December 31, 2012 | 15,328 |  |  | $ | 8.07 |
Granted | 7,462 |  |  | $ | 6.32 |
Vested | (13,395 | ) |  | $ | 7.85 |
Forfeited / Canceled | (1,752 | ) |  | $ | 7.33 |
Unvested restricted shares outstanding at December 31, 2013 | 7,643 |  |  | $ | 6.92 |
Granted | 6,367 |  |  | $ | 6.17 |
Vested | (3,432 | ) |  | $ | 7.04 |
Forfeited / Canceled | (2,022 | ) |  | $ | 6.60 |
Unvested restricted shares outstanding at December 31, 2014 | 8,556 |  |  | $ | 6.39 |
Preferred Stock |
Stockholders Equity Note [Line Items] |
Schedule of Stock by Class | The following table presents information regarding the Company’s preferred stock (in thousands):
| December 31,
| 2014 |  | 2013
Shares authorized | 50,000 |  |  | 50,000 |
Shares outstanding at end of period |  |  |
8.5% Convertible perpetual preferred stock | 2,650 |  |  | 2,650 |
6.0% Convertible perpetual preferred stock | — |  |  | 2,000 |
7.0% Convertible perpetual preferred stock | 3,000 |  |  | 3,000 |
Common Stock |
Stockholders Equity Note [Line Items] |
Schedule of Stock by Class | Common Stock The following table presents information regarding the Company’s common stock (in thousands):
| December 31,
| 2014 |  | 2013
Shares authorized | 800,000 |  |  | 800,000 |
Shares outstanding at end of period | 484,819 |  |  | 490,290 |
Shares held in treasury | 1,113 |  |  | 1,319 |

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