XML 24 R55.htm IDEA: XBRL DOCUMENT v2.4.0.8
Cash Due from Banks Interest-Bearing Deposits and Federal Funds Sold - Summary of Average Amount of Required Reserves (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Average Amount Of Required Reserves [Abstract]    
Vault cash and excess funds with the Federal Reserve Bank $ 1,758,908 $ 1,809,584
Average required reserves $ 37,456 $ 38,949