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Earnings (Loss) Per Share (Tables) | 12 Months Ended
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Dec. 31, 2012
Reconciliation of Net Loss Attributable to Common Stockholders | The following table reconciles net loss for the year ended December 31, 2010 to net loss attributable to common stockholders for the period:
|  | Year Ended December 31, 2010 |
|  | (In thousands) |
Net loss |  | $ | (29,695) |
Pre-IPO net loss |  |  | (1,614) |
Net loss attributable to common stockholders |  | $ | (28,081) |
Schedule of Net Loss Attributable to Stockholders, Weighted Average Shares Outstanding and Loss Per Share | The following table reflects net loss attributable to common stockholders, weighted average shares outstanding and loss per share for the year ended December 31, 2010 as previously reported and as restated:
|  | Year Ended December 31, 2010 |
|  | Previously Reported |  |  | As Restated |
|  | (In thousands, except per share amount) |
Net loss attributable to common stockholders |  | $ | (29,695 | ) |  | $ | (28,081 | )
Weighted average shares outstanding |  |  | 48,395 |  |  |  | 92,000 |
Loss per share |  | $ | (0.61 | ) |  | $ | (0.31 | )
Schedule of Weighted-Average Number of Shares Outstanding | The following is a calculation of the basic and diluted weighted average shares outstanding for the periods presented:
|  | Year Ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2010 |
|  | (In thousands) |
Basic weighted average common shares outstanding(1) |  |  | 92,180 |  |  |  | 92,056 |  |  |  | 92,000 |
Dilution effect of stock awards at end of period(2) |  |  | 333 |  |  |  | 185 |  |  |  | — |
Diluted weighted average common shares outstanding |  |  | 92,513 |  |  |  | 92,241 |  |  |  | 92,000 |
Anti-dilutive stock-based compensation awards |  |  | 465 |  |  |  | 160 |  |  |  | 227 |
(1) | The basic weighted average shares outstanding calculation for the year ended December 31, 2010 is based on the actual days in which the shares were outstanding for the period from June 22, 2010, the closing date of the Company’s IPO, to December 31, 2010.
(2) | Because the Company reported a net loss for the year ended December 31, 2010, no unvested stock awards were included in computing loss per share for the year ended December 31, 2010 because the effect was anti-dilutive.

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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