Stock-based Compensation - Summary of activity of stock options (Details) (USD $)	3 Months Ended	6 Months Ended
Mar. 31, 2013	Sep. 30, 2013
Notes to Financial Statements
Number of Shares Outstanding	80,000	115,000
Weighted Average Exercise Price Per Share	$ 6.52	$ 6.35
Weighted Aggregate Average Remaining Contract Life in Years	8 years 11 days	8 years 55 days
Intrinsic Value		$ 23,800
Shares granted in period		35,000
Shares granted - weighted average exercise price		$ 5.98
Vested - Shares Outstanding		40,000
Vested - Weighted Average Exercise Price Per Share		$ 6.37
Vested - Weighted Aggregate Average Remaining Contract Life in Years		7 years 77 days
Vested - Intrinsic Value		7,425
Exercisable - Shares Outstanding		40,000
Exercisable - Weighted Average Exercise Price Per Share		$ 6.37
Exercisable - Weighted Aggregate Average Remaining Contract Life in Years		7 years 77 days
Exercisable - Intrinsic Value		$ 7,425

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Net number of share options (or share units) granted during the period.

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of fully vested and expected to vest options outstanding.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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