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Share-Based Payments (Detail Textuals 1) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash received from exercise of option	$ 328,913	$ 612,465	$ 830,277
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercised	66,805
Number of stock options forfeited	33,760
Cash received from exercise of option	329,000	612,000	830,000
Income tax benefits	267,000	262,000	511,000
Unrecognized compensation cost	272,000
Weighted-average period expected to be recognized	2 years 6 months
Stock options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of stock options exercised	$ 0.77
Exercise price of stock options forfeited	$ 0.77
Stock options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise price of stock options exercised	$ 10.96
Exercise price of stock options forfeited	$ 10.96
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 332,000
Weighted-average period expected to be recognized	1 year 11 months 16 days
Performance Share Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded	33,500
Weighted average grant date fair value	$ 13.11
Number of performance shares forfeited	23,000
Weighted average grant date fair value for forfeited shares	$ 13.04

X

- Definition

This element represents price at which option holders acquired shares when converting their stock options into shares.

+ References

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- Definition

This element represents price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

+ References

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- Definition

Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise.

+ References

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-Name Accounting Standards Codification

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of share options (or share units) exercised during the current period.

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