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Stock-based Compensation - Summary of Activity of Stock Options (Details)
6 Months Ended
Sep. 30, 2020
$ / shares
shares
Number of Shares, Exercised (1,500)
Stock Option [Member]  
Number of Shares, Beginning Balance 227,700
Number of Shares, Granted
Number of Shares, Exercised (1,500)
Number of Shares, Forfeited or Expired (35,200)
Number of Shares, Ending Balance 191,000
Number of Shares, Vested 130,000
Number of Shares, Exercisable 130,000
Weighted Average Exercise Price Per Share, Beginning Balance | $ / shares $ 5.65
Weighted Average Exercise Price Per Share, Granted | $ / shares
Weighted Average Exercise Price Per Share, Exercised | $ / shares 6.29
Weighted Average Exercise Price Per Share, Forfeited or Expired | $ / shares
Weighted Average Exercise Price Per Share, Ending Balance | $ / shares 5.56
Weighted Average Exercise Price Per Share, Vested | $ / shares 6.37
Weighted Average Exercise Price Per Share, Exercisable | $ / shares $ 6.37
Weighted Average Remaining Contract Life in Years, Beginning Balance 4 years 9 months 29 days
Weighted Average Remaining Contract Life in Years, Ending Balance 5 years 1 month 20 days
Weighted Aggregate Average Remaining Contract Life in Years, Vested 3 years 4 months 6 days
Weighted Aggregate Average Remaining Contract Life in Years, Exercisable 3 years 4 months 6 days