Stock-based Compensation, Options Outstanding and Exercisable (Details) - Stock Options [Member] $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2021 USD ($) $ / shares shares
Options, Outstanding [Abstract]
Number Outstanding (in shares) | shares	450,000
Weighted Average Remaining Contractual Life	4 years 7 months 24 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.62
Aggregate Intrinsic Value | $	$ 481,500
Options, Exercisable [Abstract]
Number Outstanding ( in shares) | shares	450,000
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.62
Aggregate Intrinsic Value | $	$ 481,500
Grant Date February 24, 2016 [Member]
Options, Outstanding [Abstract]
Number Outstanding (in shares) | shares	450,000
Weighted Average Remaining Contractual Life	4 years 7 months 24 days
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.62
Options, Exercisable [Abstract]
Number Outstanding ( in shares) | shares	450,000
Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 1.62