Securities - Cost of Restricted Stock (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of Investments [Line Items]    
Total restricted stock $ 6,006 $ 5,312 [1]
FRB Stock [Member]    
Schedule of Investments [Line Items]    
Total restricted stock 3,553 3,535
FHLB Stock [Member]    
Schedule of Investments [Line Items]    
Total restricted stock $ 2,453 $ 1,777
[1] Derived from audited consolidated financial statements.