Mortgage Loans Held For Investment And Related Assets (Schedule Of Mortgage Loan Portfolio) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2010
Mortgage Loans Held For Investment And Related Assets [Abstract]
Adjustable-rate loans	$ 191,093	$ 238,442
Adjustable-rate loans, percent of total loans	55.00%	56.00%
Fixed-rate loans	159,142	190,870
Fixed-rate loans, percent of Total loans	45.00%	44.00%
Total loans	350,235	429,312
Total loans, percent of Total loans	100.00%	100.00%
Unamortized deferred fees and costs	2,868	3,429
Less: Allowance for loan losses	(14,314)	(26,540)	(92,087)	(93,535)
Total	$ 338,789	$ 406,201

Adjustable Rate Loans To Total Loans

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Fixed Rate Loans To Total Loans

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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Reflects the carrying amount of loans charging borrowers fixed rates of interest.

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Reflects the carrying amount of loans charging borrowers variable, or adjustable, rates of interest.

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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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