Loans (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Loan credit quality:
Risk rated loans	$ 87,027	$ 87,610
Pass
Loan credit quality:
Risk rated loans	65,257	62,938
OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	4,289	4,677
Substandard
Loan credit quality:
Risk rated loans	17,481	19,995
Doubtful
Loan credit quality:
Risk rated loans	0	0
Loss
Loan credit quality:
Risk rated loans	0	0
Residential real estate
Loan credit quality:
Risk rated loans	28,851	30,064
Residential real estate | Pass
Loan credit quality:
Risk rated loans	21,560	22,491
Residential real estate | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	0	0
Residential real estate | Substandard
Loan credit quality:
Risk rated loans	7,291	7,573
Residential real estate | Doubtful
Loan credit quality:
Risk rated loans	0	0
Residential real estate | Loss
Loan credit quality:
Risk rated loans	0	0
Multi-family real estate
Loan credit quality:
Risk rated loans	3,850	3,916
Multi-family real estate | Pass
Loan credit quality:
Risk rated loans	3,850	3,916
Multi-family real estate | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	0	0
Multi-family real estate | Substandard
Loan credit quality:
Risk rated loans	0	0
Multi-family real estate | Doubtful
Loan credit quality:
Risk rated loans	0	0
Multi-family real estate | Loss
Loan credit quality:
Risk rated loans	0	0
Commercial real estate
Loan credit quality:
Risk rated loans	38,762	39,126
Commercial real estate | Pass
Loan credit quality:
Risk rated loans	27,570	24,967
Commercial real estate | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	1,379	2,624
Commercial real estate | Substandard
Loan credit quality:
Risk rated loans	9,813	11,535
Commercial real estate | Doubtful
Loan credit quality:
Risk rated loans	0	0
Commercial real estate | Loss
Loan credit quality:
Risk rated loans	0	0
Land and construction
Loan credit quality:
Risk rated loans	6,643	7,276
Land and construction | Pass
Loan credit quality:
Risk rated loans	4,355	4,402
Land and construction | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	1,976	1,987
Land and construction | Substandard
Loan credit quality:
Risk rated loans	312	887
Land and construction | Doubtful
Loan credit quality:
Risk rated loans	0	0
Land and construction | Loss
Loan credit quality:
Risk rated loans	0	0
Commercial
Loan credit quality:
Risk rated loans	8,864	7,158
Commercial | Pass
Loan credit quality:
Risk rated loans	7,865	7,092
Commercial | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	934	66
Commercial | Substandard
Loan credit quality:
Risk rated loans	65	0
Commercial | Doubtful
Loan credit quality:
Risk rated loans	0	0
Commercial | Loss
Loan credit quality:
Risk rated loans	0	0
Consumer
Loan credit quality:
Risk rated loans	57	70
Consumer | Pass
Loan credit quality:
Risk rated loans	57	70
Consumer | OLEM (Other Loans Especially Mentioned)
Loan credit quality:
Risk rated loans	0	0
Consumer | Substandard
Loan credit quality:
Risk rated loans	0	0
Consumer | Doubtful
Loan credit quality:
Risk rated loans	0	0
Consumer | Loss
Loan credit quality:
Risk rated loans	$ 0	$ 0