Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Total risk-based capital
Actual Amount	$ 252,171	$ 250,837
Actual Ratio (as a percent)	13.54%	14.42%
Minimum for adequately capitalized Amount	148,993	139,161
Minimum for adequately capitalized Ratio (as a percent)	8.00%	8.00%
Tier I risk-based capital
Actual Amount	228,827	228,972
Actual Ratio (as a percent)	12.29%	13.17%
Minimum for adequately capitalized Amount	74,476	69,544
Minimum for adequately capitalized Ratio (as a percent)	4.00%	4.00%
Leverage
Actual Amount	228,827	228,972
Actual Ratio (as a percent)	9.75%	10.79%
Minimum for adequately capitalized Amount	70,408	63,662
Minimum for adequately capitalized Ratio (as a percent)	3.00%	3.00%
Subordinated debentures, which qualified as Tier 1 capital	228,827	228,972
Bank
Total risk-based capital
Actual Amount	239,577	220,133
Actual Ratio (as a percent)	12.90%	12.70%
Minimum for adequately capitalized Amount	148,575	138,666
Minimum for adequately capitalized Ratio (as a percent)	8.00%	8.00%
Minimum for well capitalized Amount	185,719	173,333
Minimum for well capitalized Ratio (as a percent)	10.00%	10.00%
Tier I risk-based capital
Actual Amount	219,299	198,339
Actual Ratio (as a percent)	11.65%	11.44%
Minimum for adequately capitalized Amount	75,296	69,349
Minimum for adequately capitalized Ratio (as a percent)	4.00%	4.00%
Minimum for well capitalized Amount	112,944	104,024
Minimum for well capitalized Ratio (as a percent)	6.00%	6.00%
Leverage
Actual Amount	219,299	198,339
Actual Ratio (as a percent)	9.24%	9.37%
Minimum for adequately capitalized Amount	71,201	63,502
Minimum for adequately capitalized Ratio (as a percent)	3.00%	3.00%
Minimum for well capitalized Amount	118,668	105,837
Minimum for well capitalized Ratio (as a percent)	5.00%	5.00%
Subordinated debentures, which qualified as Tier 1 capital	219,299	198,339
Bank | Subordinated debentures
Tier I risk-based capital
Actual Amount		30,000
Leverage
Subordinated debentures, which qualified as Tier 1 capital		$ 30,000