Fair Value Measurement (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Level	Dec. 31, 2012	Dec. 31, 2011
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of levels	3
Fair value inputs, discount rate (in hundredths)	10.05%	11.05%	11.06%
Fair value inputs, prepayment rate (in hundredths)	9.09%	25.58%	19.87%
Recurring [Member]
Assets Recorded at Fair Value on a Recurring Basis [Abstract]
U.S. Treasury securities		$ 1,005
Securities of U.S. government agencies and corporations	52,685	28,305
Obligations of states and political subdivisions	27,387	28,786
Collateralized mortgage obligations	5,405	8,278
Mortgage-backed securities	87,792	118,117
Total investments at fair value	173,269	184,491
Recurring [Member] | Level 1 [Member]
Assets Recorded at Fair Value on a Recurring Basis [Abstract]
U.S. Treasury securities		1,005
Securities of U.S. government agencies and corporations	0	0
Obligations of states and political subdivisions	0	0
Collateralized mortgage obligations	0	0
Mortgage-backed securities	0	0
Total investments at fair value	0	1,005
Recurring [Member] | Level 2 [Member]
Assets Recorded at Fair Value on a Recurring Basis [Abstract]
U.S. Treasury securities		0
Securities of U.S. government agencies and corporations	52,685	28,305
Obligations of states and political subdivisions	27,387	28,786
Collateralized mortgage obligations	5,405	8,278
Mortgage-backed securities	87,792	118,117
Total investments at fair value	173,269	183,486
Recurring [Member] | Level 3 [Member]
Assets Recorded at Fair Value on a Recurring Basis [Abstract]
U.S. Treasury securities		0
Securities of U.S. government agencies and corporations	0	0
Obligations of states and political subdivisions	0	0
Collateralized mortgage obligations	0	0
Mortgage-backed securities	0	0
Total investments at fair value	0	0
Non-recurring [Member]
Assets Recorded at Fair Value on a Non-recurring Basis [Abstract]
Impaired loans	1,095	2,513
Other real estate owned		1,062
Loan servicing rights	1,968	1,224
Total assets at fair value	3,063	4,799
Non-recurring [Member] | Level 1 [Member]
Assets Recorded at Fair Value on a Non-recurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned		0
Loan servicing rights	0	0
Total assets at fair value	0	0
Non-recurring [Member] | Level 2 [Member]
Assets Recorded at Fair Value on a Non-recurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned		0
Loan servicing rights	0	0
Total assets at fair value	0	0
Non-recurring [Member] | Level 3 [Member]
Assets Recorded at Fair Value on a Non-recurring Basis [Abstract]
Impaired loans	1,095	2,513
Other real estate owned		1,062
Loan servicing rights	1,968	1,224
Total assets at fair value	$ 3,063	$ 4,799
Impaired Loans [Member] | Cost Approach Valuation Technique [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value inputs, selling commission costs (in hundredths)	6.00%
Impaired Loans [Member] | Cost Approach Valuation Technique [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value inputs, selling commission costs (in hundredths)	5.00%
Loan Servicing Rights [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair value inputs, discount rate (in hundredths)	10.05%
Fair value inputs, prepayment rate (in hundredths)	9.09%