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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2016
Jun. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Statement Of Financial Position [Abstract]            
Securities - Held to maturity, Fair value $ 30,849   $ 0      
Allowance for loan and lease losses $ 14,912 $ 13,772 $ 12,567 $ 11,544 $ 11,462 $ 8,843