XML 13 R54.htm IDEA: XBRL DOCUMENT v2.4.0.8
Securities - Net Gains and Losses on Trading Account Securities (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]        
Net gain on sales transactions $ 167 $ 108 $ 660 $ 684
Net mark-to-market gains (losses) 13 (29) 10 (409)
Net gain (loss) on trading account securities $ 180 $ 79 $ 670 $ 275