Fair Value Disclosures (Narrative) (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Sep. 30, 2011
Jun. 30, 2011
Sep. 30, 2012
Mortgage Servicing Rights [Member]
Minimum [Member]
Sep. 30, 2012
Mortgage Servicing Rights [Member]
Maximum [Member]
Sep. 30, 2012
Impaired Loans [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]              
Loans receivable, carrying value $ 169,125 $ 175,628 $ 187,944       $ 204
Loans receivable, valuation allowance 1,800 1,625 1,550 1,800     172
Loans receivable, fair value             $ 32
Fair value of servicing rights, discount rates         9.00% 20.00%  
Fair value of servicing rights, repayment speed         140.00% 324.00%