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Assets Measured at Fair Value on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Level 3
Jun. 30, 2012
Level 3
Jun. 30, 2013
Level 3
Fair Value, Measurements, Recurring
Jun. 30, 2013
Level 3
Deposits for participation interest accounts
Fair Value, Measurements, Recurring
Discounted Cash Flows
Jun. 30, 2013
Level 3
Deposits for participation interest accounts
Fair Value, Measurements, Recurring
Discounted Cash Flows
Minimum
Jun. 30, 2013
Level 3
Deposits for participation interest accounts
Fair Value, Measurements, Recurring
Discounted Cash Flows
Maximum
Jun. 30, 2013
Level 3
Service revenue receivables
Fair Value, Measurements, Recurring
Discounted Cash Flows
Minimum
Jun. 30, 2013
Level 3
Service revenue receivables
Fair Value, Measurements, Recurring
Discounted Cash Flows
Maximum
Fair Value Inputs, Assets, Quantitative Information [Line Items]                    
Deposits for participation interest accounts $ 13,147 $ 4,039 $ 13,147 $ 4,039 $ 13,147          
Service revenue receivables $ 14,817 $ 16,341 $ 14,817 $ 16,341 $ 14,817          
Discount rate             8.00% 15.00% 10.00% 16.00%
Annual prepayment rates             5.00% 12.00% 3.00% 9.00%
Annual default rates             0.00% 2.25% 1.00% 10.00%
Annual net recovery rates           2.67%     2.00% 2.50%