Federal Home Loan Bank Advances, Other Borrowings and Subordinated Notes (Summary of Pledged Securities Related to Securities Sold Under Repurchase Agreements) (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016
Financial Instruments Owned and Pledged as Collateral [Line Items]
Excess pledged collateral	$ 23,092
Securities sold under agreements to repurchase	46,280
Securities Sold under Agreements to Repurchase
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged financial instruments, Not separately reported, Securities for repurchase agreements	69,400
Securities sold under agreements to repurchase	46,300	$ 61,800	$ 38,800
Maturity Overnight | Securities Sold under Agreements to Repurchase
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged financial instruments, Not separately reported, Securities for repurchase agreements	69,372
Available-for-sale securities | Maturity Overnight | Mortgage-backed securities
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged financial instruments, Not separately reported, Securities for repurchase agreements	44,372
Held-to-maturity securities | Maturity Overnight | U.S. Government agencies
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged financial instruments, Not separately reported, Securities for repurchase agreements	$ 25,000