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12. Stockholders' Equity (Details 1)
12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
shares
Stockholders Equity Details 1  
Number of Options Outstanding, Beginning | shares 421,250
Number of Options Granted | shares 50,000
Number of Options Exercised | shares (127,750)
Number of Options Forfeited | shares (3,750)
Number of Options Outstanding, Ending | shares 339,750
Number of Options Vested and Exercisable | shares 191,625
Weighted Average Exercise Price Outstanding, Beginning $ 5.16
Weighted Average Exercise Price Granted 6.73
Weighted Average Exercise Price Exercised 2.66
Weighted Average Exercise Price Forfeited 5.09
Weighted Average Exercise Price Outstanding, Ending 6.34
Weighted Average Exercise Price Vested and Exercisable $ 6.21
Weighted Average Remaining Contractual Life (in years) Outstanding Beginning 3 years 1 month 17 days
Weighted Average Remaining Contractual Life (in years) Outstanding Ending 3 years 4 months 10 days
Weighted Average Remaining Contractual Life (in years) Vested and Exercisable 3 years 3 months 18 days
Aggregate Intrinsic Value Outstanding, Beginning | $ $ 1,258,013
Aggregate Intrinsic Value Granted $ 113,500
Aggregate Intrinsic Value Exercised | $ $ 677,713
Aggregate Intrinsic Value Forfeited/canceled $ 32,150
Aggregate Intrinsic Value Outstanding, Ending | $ $ 904,775
Aggregate Intrinsic Value Vested and Exercisable | $ $ 534,094