Investment Securities (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Amortized cost and fair value of investment securities held to maturity [Abstract]
Amortized Cost	$ 34,066,000	$ 40,357,000
Gross Unrealized Gains	1,397,000	1,376,000
Gross Unrealized Losses	0	(9,000)
Fair Value	35,463,000	41,724,000
Securities pledged as collateral for borrowings	7,288,000	6,432,000
Number of securities in continuous unrealized loss position	0
Fair Value [Abstract]
Less than 12 Months, Fair Value		3,078,000
12 Months or More, Fair Value		0
Total, Fair Value		3,078,000
Unrealized Losses [Abstract]
Less than 12 Months, Unrealized Losses		(9,000)
12 Months or More, Unrealized Losses		0
Total, Unrealized Losses		(9,000)
Amortized Cost [Abstract]
Due in one year or less	5,010,000
Due from one year to five years	25,524,000
Due from five years to ten years	3,022,000
US Government sponsored Mortgage-backed securities	510,000
Total	34,066,000
Estimated Fair Value [Abstract]
Due in one year or less	5,059,000
Due from one year to five years	26,448,000
Due from five years to ten years	3,406,000
US Government sponsored Mortgage-backed securities	550,000
Total	35,463,000
US Treasury Securities [Member]
Amortized cost and fair value of investment securities held to maturity [Abstract]
Amortized Cost	29,414,000	34,498,000
Gross Unrealized Gains	1,278,000	1,285,000
Gross Unrealized Losses	0	(5,000)
Fair Value	30,692,000	35,778,000
Fair Value [Abstract]
Less than 12 Months, Fair Value		2,046,000
12 Months or More, Fair Value		0
Total, Fair Value		2,046,000
Unrealized Losses [Abstract]
Less than 12 Months, Unrealized Losses		(5,000)
12 Months or More, Unrealized Losses		0
Total, Unrealized Losses		(5,000)
US Agency Securities [Member]
Amortized cost and fair value of investment securities held to maturity [Abstract]
Amortized Cost	4,142,000	5,206,000
Gross Unrealized Gains	79,000	43,000
Gross Unrealized Losses	0	(4,000)
Fair Value	4,221,000	5,245,000
Fair Value [Abstract]
Less than 12 Months, Fair Value		1,032,000
12 Months or More, Fair Value		0
Total, Fair Value		1,032,000
Unrealized Losses [Abstract]
Less than 12 Months, Unrealized Losses		(4,000)
12 Months or More, Unrealized Losses		0
Total, Unrealized Losses		(4,000)
US Government Sponsored Mortgage-Backed Securities [Member]
Amortized cost and fair value of investment securities held to maturity [Abstract]
Amortized Cost	510,000	653,000
Gross Unrealized Gains	40,000	48,000
Gross Unrealized Losses	0	0
Fair Value	$ 550,000	$ 701,000