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Fair Value Accounting (Details 1) (Asset-backed Securities [Member], USD $)
In Thousands, unless otherwise specified
9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Asset-backed Securities [Member]
   
Reconciliation of residential mortgage-backed securities    
Balance beginning of period $ 6,586 $ 9,143
Total gains or losses (realized/unrealized):    
Included in earnings (790) (673)
Included in other comprehensive loss 1,074 1,379
Sales (3,802) 0
Payments, accretion and amortization (1,697) (2,433)
Balance end of period $ 1,371 $ 7,416