Summary of Significant Accounting Policies and Related Matters - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2012 Month Day
Significant Accounting Policies [Line Items]
Number of days loans deemed to be past on mortgage and commercial loans	90
Percentage of loan to value ratio	60.00%
Number of maturity days	180
Maximum number of nonaccrual loans and loans past	90
Period of portfolio segment for actual loss	18
Percentage of income tax examination on tax benefits	50.00%
Buildings
Significant Accounting Policies [Line Items]
Estimated lives for Building	40 years
Equipment | Minimum
Significant Accounting Policies [Line Items]
Estimated lives for Building	1 year
Equipment | Maximum
Significant Accounting Policies [Line Items]
Estimated lives for Building	10 years