Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Allowance for loan losses [Roll Forward]
Beginning Balance	$ 4,501	$ 3,980
Charge-offs	(180)	(158)
Recoveries	41	65
Provisions	324	225
Ending Balance	4,686	4,112
Ending balance: related to loans individually evaluated for impairment	1,061	955
Ending balance: related to loans collectively evaluated for impairment	3,625	3,157
Loans receivable, ending balance	338,517	303,441
Ending balance: individually evaluated for impairment	8,149	5,390
Ending balance: collectively evaluated for impairment	330,368	298,051
1-4 Family First Lien Residential Mortgage [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	811	664
Charge-offs	(12)	(20)
Recoveries	12	28
Provisions	17	47
Ending Balance	828	719
Ending balance: related to loans individually evaluated for impairment	172	161
Ending balance: related to loans collectively evaluated for impairment	656	558
Loans receivable, ending balance	177,411	160,339
Ending balance: individually evaluated for impairment	2,370	1,206
Ending balance: collectively evaluated for impairment	175,041	159,133
Residential Construction Mortgage [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provisions	0	0
Ending Balance	0	0
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	0	0
Loans receivable, ending balance	778	2,919
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	778	2,919
Commercial Real Estate [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	1,748	1,346
Charge-offs	0	(54)
Recoveries	0	14
Provisions	147	159
Ending Balance	1,895	1,465
Ending balance: related to loans individually evaluated for impairment	451	228
Ending balance: related to loans collectively evaluated for impairment	1,444	1,237
Loans receivable, ending balance	84,308	73,003
Ending balance: individually evaluated for impairment	3,852	2,491
Ending balance: collectively evaluated for impairment	80,456	70,512
Commercial Lines of Credit [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	440	463
Charge-offs	(49)	0
Recoveries	0	0
Provisions	82	52
Ending Balance	473	515
Ending balance: related to loans individually evaluated for impairment	100	228
Ending balance: related to loans collectively evaluated for impairment	373	287
Loans receivable, ending balance	13,461	13,978
Ending balance: individually evaluated for impairment	456	452
Ending balance: collectively evaluated for impairment	13,005	13,526
Other Commercial and Industrial Loans [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	750	649
Charge-offs	(10)	(43)
Recoveries	0	0
Provisions	114	113
Ending Balance	854	719
Ending balance: related to loans individually evaluated for impairment	242	277
Ending balance: related to loans collectively evaluated for impairment	612	442
Loans receivable, ending balance	32,826	21,393
Ending balance: individually evaluated for impairment	836	794
Ending balance: collectively evaluated for impairment	31,990	20,599
Municipal [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	2	2
Charge-offs	0	0
Recoveries	0	0
Provisions	0	0
Ending Balance	2	2
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	2	2
Loans receivable, ending balance	4,538	4,203
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	4,538	4,203
Home Equity and Junior Liens [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	494	501
Charge-offs	(81)	0
Recoveries	13	2
Provisions	63	(8)
Ending Balance	489	495
Ending balance: related to loans individually evaluated for impairment	93	61
Ending balance: related to loans collectively evaluated for impairment	396	434
Loans receivable, ending balance	21,552	23,673
Ending balance: individually evaluated for impairment	632	447
Ending balance: collectively evaluated for impairment	20,920	23,226
Other Consumer [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	168	162
Charge-offs	(28)	(41)
Recoveries	16	21
Provisions	(17)	(8)
Ending Balance	139	134
Ending balance: related to loans individually evaluated for impairment	3	0
Ending balance: related to loans collectively evaluated for impairment	136	134
Loans receivable, ending balance	3,643	3,933
Ending balance: individually evaluated for impairment	3	0
Ending balance: collectively evaluated for impairment	3,640	3,933
Unallocated [Member]
Allowance for loan losses [Roll Forward]
Beginning Balance	88	193
Charge-offs	0	0
Recoveries	0	0
Provisions	(82)	(130)
Ending Balance	6	63
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	$ 6	$ 63