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16. Stock Option Plans (Details) - Schedule of Share-based Compensation, Stock Options, Activity - USD ($)
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Schedule of Share-based Compensation, Stock Options, Activity [Abstract]      
Options Outstanding, Number of Options 42,500 72,500 79,000
Options Outstanding, Average Exercise Price $ 5.40 $ 5.26 $ 5.26
Options Outstanding, Average Remaining Contractual Term 1 year 219 days 2 years  
Options Outstanding, Aggregate Intrinsic Value $ 0 $ 0  
Vested Options:      
Vested Options, Number of Options 22,500 24,000  
Vested Options, Average Exercise Price $ 5.68 $ 5.67  
Vested Options, Average Remaining Contractual Term 1 year 109 days 1 year 6 months  
Vested Options, Aggregate Intrinsic Value $ 0 $ 0  
Options Granted, Number of Options 0 7,500  
Options Granted, Average Exercise Price $ 0 $ 3.31  
Options Exercised, Number of Options 0 0  
Options Exercised, Average Exercise Price $ 0 $ 0  
Options Canceled/Forfeited, Number of Options (30,000) (14,000)  
Options Canceled/Forfeited, Average Exercise Price $ 5.07 $ 4.17