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13. Stock Options - Summary information about options outstanding at March 31, 2015 (Details) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Number of options outstanding	153,600	113,600	80,000	83,750
Weighted Average Exercise Price Per Share	$ 6.52	$ 6.35	$ 6.52	$ 6.42
Weighted Average Remaining Contract Life in Years	7 years 4 months 10 days	7 years 7 months 28 days	8 years 11 days
Aggregate Intrinsic Value		$ 154,062		$ 127,363
Exercise Prices 5.98 - 6.25
Number of options outstanding	45,000
Weighted Average Exercise Price Per Share	$ 6.00
Exercise Prices 6.26 - 6.50
Number of options outstanding	28,600
Weighted Average Exercise Price Per Share	$ 6.29
Exercise Prices 6.51 - 6.80
Number of options outstanding	40,000
Weighted Average Exercise Price Per Share	$ 6.80
Exercise Prices 6.81 - 7.00
Number of options outstanding	40,000
Weighted Average Exercise Price Per Share	$ 7.00
Exercise Prices 5.98 - 7.00
Number of options outstanding	153,600
Weighted Average Exercise Price Per Share	$ 6.52

X

- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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