Minimum Regulatory Capital Requirements (Details) (USD $)	Dec. 31, 2012		Dec. 31, 2011
Actual [Abstract]
Tier I capital to total adjusted assets, actual amount	$ 38,556,000	[1]	$ 28,283,000	[2]
Tier I capital (to risk weighted assets), actual amount	38,556,000	[3]	28,283,000	[4]
Total capital (to risk weighted assets), actual amount	42,175,000	[3]	31,564,000	[4]
Ratio [Abstract]
Tier I capital (to total adjusted assets) actual ratio (in hundredths)	10.12%	[1]	8.33%	[2]
Tier I capital (to risk weighted assets) actual ratio (in hundredths)	13.35%	[3]	10.78%	[4]
Total capital (to risk weighted assets) actual ratio (in hundredths)	14.60%	[3]	12.03%	[4]
For Capital Adequacy Purposes [Abstract]
Tier I capital (to total adjusted assets) minimum capital required for capital adequacy purposes, amount	15,243,000	[1]	13,588,000	[2]
Tier I capital (to risk weighted assets) minimum required for capital adequacy purposes, amount	11,553,000	[3]	10,498,000	[4]
Total capital (to risk weighted assets) minimum required for capital adequacy purposes, amount	23,106,000	[3]	20,995,000	[4]
For Capital Adequacy Purposes, Ratio [Abstract]
Tier I capital (to total adjusted assets) minimum required for capital adequacy purposes (to average assets) ratio (in hundredths)	4.00%	[1]	4.00%	[2]
Tier I capital (to risk weighted assets) minimum required for capital adequacy purposes, ratio (in hundredths)	4.00%	[3]	4.00%	[4]
Total capital (to risk weighted assets) minimum required for capital adequacy purposes, ratio (in hundredths)	8.00%	[3]	8.00%	[4]
To be Well Capitalized Under Prompt Corrective Action Regulations [Abstract]
Tier I capital (to total adjusted assets) minimum capital required to be well capitalized und prompt corrective action regulations, amount	19,054,000	[1]	16,985,000	[2]
Tier I capital (to risk weighted assets) minimum required to be well capitalized under prompt corrective action regulations, amount	17,329,000	[3]	15,747,000	[4]
Total capital (to risk weighted assets) minimum required to be well capitalized under prompt corrective action regulations, amount	28,882,000	[3]	26,244,000	[4]
To be Well Capitalized Under Prompt Corrective Action Regulations, Ratio [Abstract]
Tier I capital (to total adjusted assets) minimum required to be well capitalized under prompt corrective action regulations (to average assets) ratio (in hundredths)	5.00%	[1]	5.00%	[2]
Tier I capital (to risk weighted assets) minimum required to be well capitalized under prompt corrective action requirements (in hundredths)	6.00%	[3]	6.00%	[4]
Total capital (to risk weighted assets) minimum required to be well capitalized under prompt corrective action regulations, ratio (in hundredths)	10.00%	[3]	10.00%	[4]
Total adjusted assets	381,083		339,691
Total risk-weighted assets	288,821		262,443
Adjustments to equity from GAAP to RAP [Abstract]
Equity	38,813,000		28,237,000
Accumulated other comprehensive loss	496,000		659,000
Core deposit intangible	(753,000)		(613,000)
Total Tier I capital	38,556,000	[1]	28,283,000	[2]
Allowance for loan and lease losses, limited to 1.25% of risk weighted assets	3,619,000		3,281,000
Total capital	$ 42,175,000	[3]	$ 31,564,000	[4]
Allowance for loan and lease losses limited to risk weighted assets (in hundredths)	1.25%		1.25%

[1] Based on total adjusted assets of $381,083 at December 31, 2012.

[2] Based on total adjusted assets of $339,691 at December 31, 2011.

[3] Based on risk-weighted assets of $288,821 at December 31, 2012.

[4] Based on risk-weighted assets of $262,443 at December 31, 2011.