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Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 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 $ 806 $ (9)
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 806 1,199
Net purchases, sales, calls, and maturities (649) (948)
Net transfers into Level 3   74
Balance at the end of year $ 11,799 $ 11,642