Mortgage Loans Held For Investment And Related Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Jul. 31, 2011	Apr. 30, 2011
Loan loss reserve as a percentage of mortgage loans	16.50%	16.10%
Percentage of mortgage loan portfolio consisting of borrowers from Florida, California and New York	52.00%
Loans held for investment	$ 207.3
In-substance foreclosures	$ 7.2	$ 7.7
HRB Bank Interest-Only Mortgage [Member]
Percent of loans purchased	63.00%
Minimum Credit Score [Member]
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 [Member]
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

In-substance foreclosures

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- Definition

Loan Loss Reserve To Mortgage Loans

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- Definition

Loans and Receivables Held for Investment Total

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- Definition

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

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- Definition

Maximum Credit Score to Be Given Internal Risk Rating of Medium

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- Definition

Minimum Credit Score To Be Given Internal Risk Rating Of Low

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- Definition

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

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13537-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13531-108611

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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