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Stock Options - Summary information about options outstanding at March 31, 2014 (Details) (USD $) | 12 Months Ended |
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Number of options outstanding | 113,600 | 80,000 | 83,750 | 53,750
Weighted Average Exercise Price Per Share | $ 6.35 | $ 6.52 | $ 6.42 | $ 5.69
Weighted Average Remaining Contract Life in Years | 8 years 11 days | 8 years 237 days | 7 years 121 days |
Aggregate Intrinsic Value | $ 154,062 |  | $ 127,363 | $ 401,200
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 5.98 - 6.80 total |  |  |  |
Number of options outstanding | 113,600 |  |  |
Weighted Average Exercise Price Per Share | $ 6.35 |  |  |
Weighted Average Remaining Contract Life in Years | 7 years 241 days |  |  |
Aggregate Intrinsic Value | $ 154,062 |  |  |

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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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