Derivative Instruments and Hedging Activities - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) interest_rate_swap interest_rate_cap	Dec. 31, 2014 USD ($) interest_rate_swap interest_rate_cap
Derivative [Line Items]
Termination value of derivatives in a net liability position	$ 8,367
Derivative collateral posted	11,690
Not Designated as Hedging Instruments
Derivative [Line Items]
Notional amount of interest rate derivatives	192,759
Cash Flow Hedging
Derivative [Line Items]
Estimated amount to be transferred from OCI to earnings	$ 1,157
Interest Rate Swap
Derivative [Line Items]
Number of interest rate derivatives held | interest_rate_swap	5	5,000
Notional amount of interest rate derivatives	$ 56,000	$ 56,000
Interest Rate Swap | Cash Flow Hedging | Trust Preferred Debt
Derivative [Line Items]
Notional amount of interest rate derivatives	26,000
Interest Rate Swap | Cash Flow Hedging | Federal Home Loan Bank Advances
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 30,000
Interest Rate Cap
Derivative [Line Items]
Number of interest rate derivatives held | interest_rate_cap	1	1,000
Notional amount of interest rate derivatives	$ 13,000	$ 13,000
Interest Rate Cap | Cash Flow Hedging | Trust Preferred Debt
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 13,000