Loans Receivable (Financing Receivables) and Allowance for Loan Losses (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Allowance for Loan Losses
Total loans	$ 581,236,000	$ 609,157,000
Unearned loan fees, net	884,000	1,239,000
Total Loans	582,120,000	610,396,000	660,795,000
Overdrawn accounts	322,000	919,000
Commercial
Allowance for Loan Losses
Total loans	49,084,000	47,838,000
Total Loans	49,173,000	47,907,000	52,627,000
Commercial Mortgage
Allowance for Loan Losses
Total loans	247,730,000	263,763,000
Total Loans	247,719,000	263,714,000	299,781,000
Commercial construction
Allowance for Loan Losses
Total loans	48,456,000	49,931,000
Total Loans	48,451,000	49,902,000	52,838,000
Consumer construction
Allowance for Loan Losses
Total loans	17,905,000	18,668,000
Total Loans	18,106,000	18,837,000	16,148,000
Residential mortgage
Allowance for Loan Losses
Total loans	107,446,000	111,376,000
Total Loans	107,054,000	111,345,000	116,173,000
Consumer
Allowance for Loan Losses
Total loans	110,615,000	117,581,000
Total Loans	$ 111,617,000		$ 123,228,000