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Stockholders' Equity (Details 1) - $ / shares | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Shares Exercisable, beginning of period (in shares) | 132,099 | 83,718
Shares, Vested (in shares) | 34,801 | 56,464
Shares, Exercised (in shares) | 29,500 | 0
Shares, Cancelled (in shares) | (73,000) | (8,083)
Shares Exercisable at the end of period (in shares) | 64,400 | 132,099
Weighted Average Exercise Price, Exercisable, beginning of period (in dollars per share) | $ 5.07 | $ 4.67
Weighted Average Exercise Price, Vested (in dollars per share) | 5.65 | 5.76
Weighted Average Exercise Price, Exercised (in dollars per share) | 2.88 | 0
Weighted Average Exercise Price, Cancelled (in dollars per share) | 6.06 | 5.77
Weighted Average Exercise Price, Exercisable at the end of period (in dollars per share) | $ 5.26 | $ 5.07
Shares Outstanding, beginning of period (in shares) | 214,500 | 228,500
Shares, Granted (in shares) | 49,000 | 0
Shares Exercised (in shares) | 29,500 | 0
Shares Cancelled (in shares) | (80,000) | (14,000)
Shares Outstanding at the end of period (in shares) | 154,000 | 214,500
Weighted Average Exercise Price, Outstanding, beginning of period (in dollars per share) | $ 5.20 | $ 5.23
Weighted Average Exercise Price, Granted (in dollars per share) | 5.27 | 0
Weighted Average Exercise Price, Exercised (in dollars per share) | 2.88 | 0
Weighted Average Exercise Price, Cancelled (in dollars per share) | 6.01 | 5.68
Weighted Average Exercise Price, Outstanding at the end of period (in dollars per share) | $ 5.25 | $ 5.20

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