XML 34 R89.htm IDEA: XBRL DOCUMENT v2.4.0.6
Deposits - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Deposits [Line Items]    
Aggregate time deposits in denominations $ 411.8 $ 517.8
Brokered deposits $ 27.8 $ 67.9