Mortgage Loans Held For Investment And Related Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Mortgage Loans Held For Investment And Related Assets [Line Items]
Allowance as Percent of Principal	4.10%	6.20%
Percentage of mortgage loan portfolio consisting of borrowers from Florida, California, New York, and Wisconsin	57.00%
Accrued interest on loans held for investment	$ 1.3	$ 1.6
HRB Bank Interest-Only Mortgage
Mortgage Loans Held For Investment And Related Assets [Line Items]
Loans held for investment portfolio	$ 2.4	$ 2.7
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]
Mortgage loan's past due, in days	180 days
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]
Mortgage loan's past due, in days	60 days
Allowance for Credit Losses, Period at Which Indivudally Evaluated for Impairment	60 days