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Stock Acquisition Rights, Stock Options and Warrants (Summary of Stock Option Activity) (Details) - Stock Option [Member]
9 Months Ended
Dec. 31, 2019
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding | shares 1,923,634
Options, Granted | shares 0
Options, Exercised | shares (97,323)
Options, Forfeited/Expired | shares (10,875)
Options Outstanding | shares 1,815,436
Weighted Average Exercise Price, Options outstanding | $ / shares $ 23.64
Weighted Average Exercise Price, Granted | $ / shares
Weighted Average Exercise Price, Exercised | $ / shares (21.78)
Weighted Average Exercise Price, forfeited/expired | $ / shares (48.23)
Weighted Average Exercise Price, Options outstanding | $ / shares $ 23.54