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Stockholders' Equity (Deficit) (Details 1) - Equity Incentive 2011 Plan [Member] - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] |  |  |
Common shares, nonvested beginning of period | 372,092 | 290,457 |
Common shares, granted | 277,059 | 217,952 |
Common shares, vested | (147,759) | (128,342) |
Common shares, forfeited | (39,466) | (7,975) |
Common shares, nonvested end of period | 461,926 | 372,092 | 290,457
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward] |  |  |
Weighted average grant date fair value, nonvested beginning of period | $ 4.00 | $ 4.88 |
Weighted average grant date fair value, granted | 7.43 | 7.60 |
Weighted average grant date fair value, vested | 4.32 | 4.56 |
Weighted average grant date fair value, forfeited | 3.44 | 4.16 |
Weighted average grant date fair value, nonvested end of period | $ 3.12 | $ 4.00 | $ 4.88
Weighted average remaining years to vest | 2 years 9 months | 3 years | 3 years 4 months

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- Definition Share-based Compensation Arrangements by Share-based Payment Award, Nonvested Options, Forfeitures in Period, Weighted Average Exercise Price + References No definition available. + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + 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 (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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