Allowance for Credit Losses, Period at Which Collectively Evaluated for Impairment

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Allowance for Credit Losses, Period at Which Indivudally Evaluated for Impairment

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Loans and Leases Receivable, Allowance as percent of principal

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Loan-to-value at Origination in Order to Have Internal Risk Rating of Medium

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Maximum Credit Score to Be Given Internal Risk Rating of Medium

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Minimum Credit Score To Be Given Internal Risk Rating Of Low

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Percentage Of Mortgage Loan Portfolio Consisting Of Borrowers From Florida, California, New York, And Wisconsin

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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Mortgage Loans Held For Investment And Related Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Apr. 30, 2014
Mortgage Loans Held For Investment And Related Assets [Line Items]
Transfer of mortgage loans held for investment to held for sale	$ 0	$ 7,608
Allowance as Percent of Principal	3.70%	4.00%	4.10%
Percentage of mortgage loan portfolio consisting of borrowers from Florida, California, New York, and Wisconsin	52.00%
Minimum Credit Score
Mortgage Loans Held For Investment And Related Assets [Line Items]
Loan-to-value at origination in order to have internal risk rating of medium	80.00%
Minimum credit score to be given internal risk rating of low	700
Maximum Credit Score
Mortgage Loans Held For Investment And Related Assets [Line Items]
Loan-to-value at origination in order to have internal risk rating of medium	80.00%
Maximum credit score to be given internal risk rating of medium	700
Maximum [Member]
Mortgage Loans Held For Investment And Related Assets [Line Items]
Allowance for Credit Losses, Period at Which Collectively Evaluated for Impairment	60 days
Minimum [Member]
Mortgage Loans Held For Investment And Related Assets [Line Items]
Allowance for Credit Losses, Period at Which Indivudally Evaluated for Impairment	60 days