Estimated Fair Value of Financial Instruments - Summary of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Securities	$ 217,510	$ 216,122
Accrued interest payable	701	789
Carrying Value [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Cash and due from banks, Federal funds sold and interest bearing deposits in other banks	68,241	52,272
Securities	217,510	216,122
Restricted stock	5,741	5,741
Portfolio loans, net	892,692	884,794
Loans held for sale	1,811	4,483
Accrued interest receivable	3,774	3,621
Demand, savings and money market	579,672	542,739
Certificates of deposit	497,179	502,850
Short-term borrowings	3,725	4,576
Federal Home Loan Bank advances	46,760	46,708
Junior subordinated debentures	16,238	16,238
Accrued interest payable	701	789
Estimated Fair Value [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Cash and due from banks, Federal funds sold and interest bearing deposits in other banks	68,241	52,272
Securities	217,510	216,122
Restricted stock		5,741
Portfolio loans, net	888,730	884,211
Loans held for sale	1,815	4,487
Accrued interest receivable	3,744	3,621
Demand, savings and money market	574,086	542,739
Certificates of deposit	498,475	504,381
Short-term borrowings	3,725	4,576
Federal Home Loan Bank advances	46,899	46,923
Junior subordinated debentures	16,650	16,778
Accrued interest payable	701	789
Level 1 [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Cash and due from banks, Federal funds sold and interest bearing deposits in other banks	68,241
Securities	0
Portfolio loans, net
Loans held for sale
Accrued interest receivable
Demand, savings and money market
Certificates of deposit
Short-term borrowings
Federal Home Loan Bank advances
Junior subordinated debentures
Accrued interest payable
Level 2 [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Cash and due from banks, Federal funds sold and interest bearing deposits in other banks
Securities	217,510
Portfolio loans, net
Loans held for sale	1,815
Accrued interest receivable	970
Demand, savings and money market	574,086
Certificates of deposit	498,475
Short-term borrowings	3,725
Federal Home Loan Bank advances	46,899
Junior subordinated debentures	16,650
Accrued interest payable	701
Level 3 [Member]
Fair Value Inputs Assets Liabilities Quantitative Information [Line Items]
Cash and due from banks, Federal funds sold and interest bearing deposits in other banks
Securities
Portfolio loans, net	888,730
Loans held for sale	0
Accrued interest receivable	2,774
Demand, savings and money market
Certificates of deposit
Short-term borrowings
Federal Home Loan Bank advances
Junior subordinated debentures
Accrued interest payable