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Stock-based Compensation Assumptions Used In Black-Scholes Model (Details) - Option Grants - $ / shares	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Expected volatility	53.00%	59.00%
Expected dividend yield	0.00%	0.00%
Risk-free interest rate	1.59%	1.53%
Weighted average expected option term, in years	5 years 3 months	5 years
Weighted average fair value of options granted, per share	$ 4.17	$ 4.01

X

- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ 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 (f)(2)(iii)



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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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Weighted average expected volatility rate of share-based compensation awards.

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-Name Accounting Standards Codification



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-SubTopic 10



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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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- Definition

Expected term of share-based compensation awards, 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



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