Regulatory Capital Requirements and Other Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Tier 1 Capital (to adjusted tangible assets)
Actual, Amount (in dollars)	$ 135,883	$ 89,396
Actual, Ratio (as a percent)	12.71%	9.50%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	42,771	37,630
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Tier I Risk-Based Capital (to risk-weighted assets)
Actual, Amount (in dollars)	135,883	89,396
Actual, Ratio (as a percent)	13.61%	11.69%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	39,924	30,590
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Total capital (to risk-weighted assets)
Actual, Amount (in dollars)	144,004	97,918
Actual, Ratio (as a percent)	14.43%	12.80%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	79,848	61,180
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Bank
Tier 1 Capital (to adjusted tangible assets)
Actual, Amount (in dollars)	129,055	88,793
Actual, Ratio (as a percent)	12.07%	9.44%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	42,773	37,640
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	53,466	47,050
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	5.00%	5.00%
Tier I Risk-Based Capital (to risk-weighted assets)
Actual, Amount (in dollars)	129,055	88,793
Actual, Ratio (as a percent)	12.99%	11.68%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	39,750	30,408
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	59,625	45,611
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	6.00%	6.00%
Total capital (to risk-weighted assets)
Actual, Amount (in dollars)	137,049	97,378
Actual, Ratio (as a percent)	13.79%	12.81%
Minimum Required for Capital Adequacy Purposes Amount (in dollars)	79,500	60,815
Minimum Required for Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Amount (in dollars)	$ 99,375	$ 76,019
Required to be Well Capitalized Under Prompt Corrective Action Regulations, Ratio (as a percent)	10.00%	10.00%