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Organization, Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2014
Accounting Policies [Abstract] |
Net Income (Loss) Per Share | For purposes of this calculation, common stock subject to repurchase by the Company and options are considered to be common stock equivalents and are only included in the calculation of diluted earnings per share when their effect is dilutive.
|  | Year Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
|  | (in thousands, except per share amounts) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net loss available to common stockholders |  | ($ | 11,799 | ) |  | ($ | 27,953 | ) |  | ($ | 25,463 | )
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding - basic |  |  | 40,649 |  |  |  | 36,982 |  |  |  | 35,849 |
Potential common shares - options (treasury stock method) |  |  | — |  |  |  | — |  |  |  | — |
Weighted average shares outstanding - diluted |  |  | 40,649 |  |  |  | 36,982 |  |  |  | 35,849 |
Shares excluded (anti-dilutive) |  |  | 150 |  |  |  | 2 |  |  |  | 174 |
Shares excluded due to an exercise price greater than weighted average stock price for the period |  |  | 1,511 |  |  |  | 2,150 |  |  |  | 1,453 |
Net loss per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | ($ | 0.29 | ) |  | ($ | 0.76 | ) |  | ($ | 0.71 | )
Diluted |  | ($ | 0.29 | ) |  | ($ | 0.76 | ) |  | ($ | 0.71 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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