Securities Sold Under Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Securities sold under repurchase agreements by collateral pledged
Total securities sold under repurchase agreements	$ 163,932	$ 125,120
U.S. Government Agency Obligations Issued by U.S. Government Sponsored Agencies [Member]
Securities sold under repurchase agreements by collateral pledged
Total securities sold under repurchase agreements		22,516
Other Residential Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Securities sold under repurchase agreements by collateral pledged
Total securities sold under repurchase agreements	122,865	$ 102,604
Commercial Mortgage-Backed Securities Issued or Guaranteed by FNMA, FHLMC or GNMA [Member]
Securities sold under repurchase agreements by collateral pledged
Total securities sold under repurchase agreements	$ 41,067