v3.3.1.900

Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Status of Nonvested Shares | A summary of the status of nonvested shares for the years ended December 31, 2015, 2014 and 2013, is presented below:
|  | Shares |  |  | Weighted Average Grant-Date Fair Value |
Nonvested at January 1, 2013 |  |  | 753,079 |  |  |  | 22.35 |
Granted |  |  | 377,379 |  |  |  | 22.77 |
Vested |  |  | (299,110 | ) |  |  | 18.79 |
Canceled |  |  | (132,117 | ) |  |  | 24.47 |
Nonvested at December 31, 2013 |  |  | 699,231 |  |  |  | 23.70 |
Granted |  |  | 992,919 |  |  |  | 14.48 |
Vested |  |  | (400,429 | ) |  |  | 20.18 |
Canceled |  |  | (169,311 | ) |  |  | 25.57 |
Nonvested at December 31, 2014 |  |  | 1,122,410 |  |  | $ | 16.52 |
Granted |  |  | 1,278,329 |  |  |  | 4.87 |
Vested |  |  | (419,222 | ) |  |  | 15.26 |
Canceled |  |  | (246,261 | ) |  |  | 14.30 |
Nonvested at December 31, 2015 |  |  | 1,735,256 |  |  | $ | 8.60 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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