Mortgage Loans Held For Investment And Related Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Oct. 31, 2012	Apr. 30, 2012
Financing Receivable, Recorded Investment [Line Items]
Loan loss allowance as percent of mortgage loan	4.70%	6.20%
Number of days past due for loans to be charged-off	180 days
Number of days past due to determine allowance for loan losses	60 days
Number of days past due to loan to be considered impaired	60 days
Total Portfolio	$ 385,867	$ 429,312
HRB Bank Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Percentage of total loans	57.00%
Loan Borrowers In Florida, California, New York, And Wisconsin [Member]
Financing Receivable, Recorded Investment [Line Items]
Percentage of total loans	58.00%
Internal Risk Rating, Medium [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Portfolio	148,184
Internal Risk Rating, Medium [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan-to-value percentage ratio	80.00%
Internal Risk Rating, Medium [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit score at origination	700
Internal Risk Rating, Low [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Portfolio	164,803
Internal Risk Rating, Low [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit score at origination	700
Internal Risk Rating, Low [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan-to-value percentage ratio	80.00%
All Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Portfolio	164,803
All Other [Member] | Internal Risk Rating, Low [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Portfolio	$ 164,803