Credit Quality and Related Allowance for Loan Losses (Details 2) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loans and Leases Receivable Disclosure [Abstract]
Minimum amount to evaluate individual loans for possible impairment			$ 100,000
Maximum amount to evaluate individual loans for possible impairment on a case by case basis			100,000
Payment delays period up to which loans are not classified as impaired, maximum			90 days
Credit Quality and Related Allowance for Loan Losses
Recorded Investment, With no related allowance recorded	4,344,000		4,344,000		2,067,000
Unpaid Principal Balance, With no related allowance recorded	4,444,000		4,444,000		2,580,000
Recorded Investment, With an allowance recorded	10,397,000		10,397,000		8,961,000
Unpaid Principal Balance, With an allowance recorded	11,774,000		11,774,000		9,983,000
Recorded Investment	14,741,000		14,741,000		11,028,000
Unpaid Principal Balance	16,218,000		16,218,000		12,563,000
Related Allowance	1,480,000		1,480,000		2,555,000
Average Investment in Impaired Loans	14,113,000	11,834,000	13,212,000	18,328,000
Interest Income Recognized on an Accrual Basis on Impaired Loans	65,000	81,000	155,000	204,000
Interest Income Recognized on a Cash Basis on Impaired Loans	92,000	23,000	121,000	671,000
Amount committed to be advanced in connection with impaired loans	0		0
Commercial and agricultural
Credit Quality and Related Allowance for Loan Losses
Recorded Investment, With no related allowance recorded	620,000		620,000		0
Unpaid Principal Balance, With no related allowance recorded	620,000		620,000		0
Recorded Investment, With an allowance recorded	516,000		516,000		532,000
Unpaid Principal Balance, With an allowance recorded	516,000		516,000		532,000
Recorded Investment	1,136,000		1,136,000		532,000
Unpaid Principal Balance	1,136,000		1,136,000		532,000
Related Allowance	150,000		150,000		224,000
Average Investment in Impaired Loans	824,000	786,000	675,000	869,000
Interest Income Recognized on an Accrual Basis on Impaired Loans	5,000	7,000	18,000	20,000
Interest Income Recognized on a Cash Basis on Impaired Loans	20,000	0	20,000	0
Residential Real Estate Mortgage
Credit Quality and Related Allowance for Loan Losses
Recorded Investment, With no related allowance recorded	613,000		613,000		916,000
Unpaid Principal Balance, With no related allowance recorded	713,000		713,000		1,173,000
Recorded Investment, With an allowance recorded	741,000		741,000		319,000
Unpaid Principal Balance, With an allowance recorded	764,000		764,000		342,000
Recorded Investment	1,354,000		1,354,000		1,235,000
Unpaid Principal Balance	1,477,000		1,477,000		1,515,000
Related Allowance	80,000		80,000		65,000
Average Investment in Impaired Loans	1,219,000	1,652,000	1,195,000	2,110,000
Interest Income Recognized on an Accrual Basis on Impaired Loans	18,000	28,000	32,000	45,000
Interest Income Recognized on a Cash Basis on Impaired Loans	7,000	10,000	14,000	21,000
Commercial
Credit Quality and Related Allowance for Loan Losses
Recorded Investment, With no related allowance recorded	2,601,000		2,601,000		623,000
Unpaid Principal Balance, With no related allowance recorded	2,601,000		2,601,000		879,000
Recorded Investment, With an allowance recorded	8,335,000		8,335,000		7,598,000
Unpaid Principal Balance, With an allowance recorded	8,834,000		8,834,000		7,742,000
Recorded Investment	10,936,000		10,936,000		8,221,000
Unpaid Principal Balance	11,435,000		11,435,000		8,621,000
Related Allowance	1,079,000		1,079,000		2,153,000
Average Investment in Impaired Loans	10,901,000	8,277,000	10,240,000	11,278,000
Interest Income Recognized on an Accrual Basis on Impaired Loans	34,000	45,000	95,000	138,000
Interest Income Recognized on a Cash Basis on Impaired Loans	65,000	5,000	79,000	89,000
Construction
Credit Quality and Related Allowance for Loan Losses
Recorded Investment, With no related allowance recorded	510,000		510,000		528,000
Unpaid Principal Balance, With no related allowance recorded	510,000		510,000		528,000
Recorded Investment, With an allowance recorded	805,000		805,000		512,000
Unpaid Principal Balance, With an allowance recorded	1,660,000		1,660,000		1,367,000
Recorded Investment	1,315,000		1,315,000		1,040,000
Unpaid Principal Balance	2,170,000		2,170,000		1,895,000
Related Allowance	171,000		171,000		113,000
Average Investment in Impaired Loans	1,169,000	1,119,000	1,102,000	4,071,000
Interest Income Recognized on an Accrual Basis on Impaired Loans	8,000	1,000	10,000	1,000
Interest Income Recognized on a Cash Basis on Impaired Loans	$ 0	$ 8,000	$ 8,000	$ 561,000