Premises and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011		Dec. 31, 2010
Premises and equipment [Abstract]
Total at cost	$ 35,314,000	$ 35,003,000
Accumulated depreciation	(8,866,000)	(7,785,000)
Premises and equipment, net	26,448,000	27,218,000	[1]
Depreciation expense	1,081,000	1,248,000	[1]	1,238,000	[1]
Period for which lease term renewed	5 years
Minimum future rental payments [Abstract]
2013	97,000
2014	98,000
2015	73,000
2016	3,000
Thereafter	0
Rent expense	97,000	96,000		95,000
Anne Arundel County, Maryland [Member]
Premises and equipment [Abstract]
Number of retail branch locations	4
Number of retail branch owned	3
Lease expiration date	Jul. 31, 2010
Annapolis, Maryland [Member]
Premises and equipment [Abstract]
Lease expiration date	Jan. 31, 2016
Land [Member]
Premises and equipment [Abstract]
Total at cost	1,537,000	1,537,000
Estimated useful lives (in years)	-
Building [Member]
Premises and equipment [Abstract]
Total at cost	29,162,000	29,028,000
Estimated useful lives (in years)	P39Y
Leasehold Improvements [Member]
Premises and equipment [Abstract]
Total at cost	1,230,000	1,206,000
Furniture, Fixtures and Equipment [Member]
Premises and equipment [Abstract]
Total at cost	3,291,000	3,232,000
Construction in Progress [Member]
Premises and equipment [Abstract]
Total at cost	$ 94,000	$ 0
Minimum [Member] | Leasehold Improvements [Member]
Premises and equipment [Abstract]
Estimated useful lives (in years)	P15Y
Minimum [Member] | Furniture, Fixtures and Equipment [Member]
Premises and equipment [Abstract]
Estimated useful lives (in years)	P3Y
Maximum [Member] | Leasehold Improvements [Member]
Premises and equipment [Abstract]
Estimated useful lives (in years)	P27Y6M
Maximum [Member] | Furniture, Fixtures and Equipment [Member]
Premises and equipment [Abstract]
Estimated useful lives (in years)	P10Y

[1] Restated