Additional Information on Status of Education Loans Outstanding (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	$ 64,655	$ 34,404
Non-accrual loan principal	189	54
Principal of loans outstanding, as a percentage of total	100.00%	100.00%
In basic forbearance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	439	171
Principal of loans outstanding, as a percentage of total	0.70%	0.50%
In school and in deferment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	22,948	14,781
Principal of loans outstanding, as a percentage of total	35.50%	43.00%
Less than 30 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	40,724	19,289
Principal of loans outstanding, as a percentage of total	63.00%	56.00%
Greater than 30 days past due, but Less than 120 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	355	109
Principal of loans outstanding, as a percentage of total	0.50%	0.30%
Greater than 120 days past due, but Less than 180 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	79	54
Principal of loans outstanding, as a percentage of total	0.10%	0.20%
Greater than 180 days past due, but not yet charged-off
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	110
Principal of loans outstanding, as a percentage of total	0.20%
Greater than 120 days past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loan principal	189	54
Non-accrual loan principal, as a percentage of total	0.30%	0.20%
Greater than 90 days, but Less than 120 days past due still accruing interest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loan principal	121	11
Past due loan principal , as a percentage of total	0.20%
Alternative Payment Plans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Principal of loans outstanding	$ 784	$ 263
Principal of loans outstanding, as a percentage of total	1.20%	0.80%