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Stockholders Equity (Details 1) - Stock Option [Member]
 6 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Number of Shares, Outstanding, Beginning Balance | shares 119,966
Number of Shares, Outstanding, Expired | shares (12,000)
Number of Shares, Outstanding, Ending Balance | shares 107,966
Number of Shares, Outstanding, Vested and Exercisable | shares 27,500
Weighted Average Exercise Price per Share, Outstanding, Beginning Balance | $ / shares $ 8.26
Weighted Average Exercise Price per Share, Outstanding, Expired | $ / shares 7.85
Weighted Average Exercise Price per Share, Outstanding, Ending Balance | $ / shares 8.31
Weighted Average Exercise Price per Share, Outstanding, Vested and Exercisable | $ / shares $ 8.64
Weighted Average Remaining Contractual Term, Beginning Balance 3 years 6 months 18 days
Weighted Average Remaining Contractual Term, Ending Balance 3 years 5 months 4 days
Weighted Average Remaining Contractual Term, Vested and Exercisable 2 years 11 months 8 days
Aggregate Intrinsic Value, Beginning Balance | $ $ 0
Aggregate Intrinsic Value, Ending Balance | $ 0
Aggregate Intrinsic Value, Vested and Exercisable | $ $ 0