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Preferred and Common Stock (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||
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Dec. 31, 2014
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| Stockholders' Equity Note [Abstract] | |||||||||||||||||||||||||||||||
| Common Stock, Capital Shares reserved for future issuance | Common shares reserved for future issuance upon the exercise, issuance or conversion of the respective equity instruments at December 31, 2014 are as follows (in thousands):
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