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Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Changes in Level 3 Investment Securities, Available for Sale Measured at Fair Value on a Recurring Basis    
Total unrealized gains/(losses) included in other comprehensive income $ 772  
Net purchases, sales, calls, and maturities (368)  
Fair Value Measured on a Recurring Basis [Member] | Significant Unobservable Inputs (Level 3) [Member]    
Changes in Level 3 Investment Securities, Available for Sale Measured at Fair Value on a Recurring Basis    
Balance at the beginning of year 11,642 $ 11,328
Total realized and unrealized gains included in income   (11)
Total unrealized gains/(losses) included in other comprehensive income 772 (69)
Net purchases, sales, calls, and maturities (368) (1,119)
Net transfers into Level 3   74
Balance at the end of year $ 12,046 $ 10,203