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Guarantees (Changes in liabilty of estimated loss from credit recourse agreement) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Movement In Guaranteed Benefit Liability Gross Roll Forward        
Balance at beginning of the period $ 1,310 $ 2,460 $ 1,955 $ 2,460
Additions from acquisition 0 0 0 0
Net charge-off/terminations (232) 0 (877) 0
Balance at the end of the period $ 1,078 $ 2,460 $ 1,078 $ 2,460