Income Taxes (Details) (USD $)	Jun. 30, 2013	Apr. 30, 2013
Income Taxes
Unrecognized tax benefits	$ 28,000
Accrued interest	290,000
Unrecognized tax benefits for which the liability for such taxes was recognized as deferred tax liabilities	0
Unrecognized tax benefits that would affect the effective tax rate if recognized	0
Accrued taxes, interest and penalties payable to the IRS		1,800,000
Reversal of accrued income taxes and related interest resulting from the entity's settlement with the IRS		$ 500,000

Represents the unrecognized tax benefits for which the liability for such taxes was recognized as deferred liabilities.

No definition available.

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- Definition

The estimated loss resulting from the income tax examination that has been accrued as of the balance sheet date, including interest and penalties.

+ References

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- Definition

The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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- Definition

The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

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-Publisher FASB

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

This element represents the amount of interest expense accrued as of the date of the statement of financial position for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name FASB Interpretation (FIN)

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- Definition

The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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