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Loss Per Share (Details)
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3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Number of common stock warrant and common stock options exercised | 1,102,741 | 1,705,406 | ||
| Number of common stock issued for stock warrant and stock options exercised | 782,324 | 1,310,250 | ||
| Shares surrendered in lieu of cash payment | 320,417 | 395,156 | ||
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Common stock investments, available for sale
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| Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] | ||||
| Potential common shares | 29,132,527 | 29,701,838 | 29,503,319 | 29,910,492 |
| X | ||||||||||
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- Definition
Shares surrendered in lieu of cash payment. No definition available.
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| X | ||||||||||
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- Definition
Number of common stock warrant and common stock options exercised. No definition available.
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| X | ||||||||||
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- Definition
Number of common stock issued for stock warrant and stock options exercised. No definition available.
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| X | ||||||||||
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- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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