Borrowings - Securities Sold Under Repurchase Agreement (Details) $ in Thousands	Dec. 31, 2015 USD ($)
Securities sold under repurchase agreements by collateral pledged
Total securities sold under repurchase agreements	$ 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	$ 102,604