Derivative Financial Instruments - Additional Information (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Derivative [Line Items]
Estimated amount to be transferred from OCI to earnings	$ 1,369
Termination value of derivatives in a net liability position	4,277
Derivative collateral posted	4,581
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount of interest rate derivatives	145,055
Federal Home Loan Bank advances
Derivative [Line Items]
Number of debt instruments held	3
Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Number of interest rate derivatives held	5
Notional amount of interest rate derivatives	56,000
Cash Flow Hedging | Interest Rate Swap | Federal Home Loan Bank advances
Derivative [Line Items]
Notional amount of interest rate derivatives	30,000
Cash Flow Hedging | Interest Rate Swap | Trust Preferred Securities
Derivative [Line Items]
Notional amount of interest rate derivatives	26,000
Cash Flow Hedging | Interest rate cap
Derivative [Line Items]
Number of interest rate derivatives held	1
Notional amount of interest rate derivatives	13,000
Cash Flow Hedging | Interest rate cap | Trust Preferred Securities
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 13,000