XML 30 R109.htm IDEA: XBRL DOCUMENT v2.4.0.6
Condensed Financial Information of Parent Company - Condensed Statements of Earnings (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]                      
Other expense, net                 $ (138,160) $ (141,025) $ (168,492)
Net earnings 22,136 9,257 23,619 22,268 21,712 22,383 21,038 16,600 77,280 81,733 62,935
Parent Company [Member]
                      
Condensed Financial Statements, Captions [Line Items]                      
Excess in net earnings of subsidiaries                 (1,261) 20,750 25,278
Dividends from the Bank                 82,300 68,000 43,100
Other expense, net                 (3,759) (7,017) (5,443)
Net earnings                 $ 77,280 $ 81,733 $ 62,935