15. Stock Option Plans (Details) - Schedule of Share-based Compensation, Stock Options, Activity - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Schedule of Share-based Compensation, Stock Options, Activity [Abstract]
Options Outstanding, Number of Options	88,000	114,600
Options Outstanding, Average Exercise Price	$ 6.12	$ 5.53
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	1 year 328 days	2 years
Options Outstanding, Aggregate Intrinsic Value	$ 11,200
Vested Options:
Vested Options, Number of Options	59,900	61,800
Vested Options, Average Exercise Price	$ 6.20	$ 6.12
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1	1 year 6 months	1 year 73 days
Vested Options, Aggregate Intrinsic Value	$ 53,760	$ 9,200
Options Granted, Number of Options	10,000	10,000
Options Granted, Average Exercise Price	$ 5.14	$ 4.22
Options Exercised, Number of Options	(5,500)	(8,300)
Options Exercised, Average Exercise Price	$ 4.84	$ 3.98
Options Canceled/Forfeited, Number of Options	(21,000)	(28,300)
Options Canceled/Forfeited, Average Exercise Price	$ 6.19	$ 3.67
Options Outstanding, Number of Options	71,500	88,000
Options Outstanding, Average Exercise Price	$ 6.06	$ 6.12
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	1 year 328 days	2 years
Options Outstanding, Aggregate Intrinsic Value	$ 64,000	$ 11,200