Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Quantitative Information about Level 3 Fair Value Measurements
Impaired loans	$ 30,738	$ 34,060
OREO	1,937	2,133
Non-recurring basis | Level 3
Quantitative Information about Level 3 Fair Value Measurements
Impaired loans	4,227	5,491
OREO	1,137	1,134
Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans
Quantitative Information about Level 3 Fair Value Measurements
Impaired loans	4,227	5,491
Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Minimum
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(1.70%)	(0.40%)
Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Maximum
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(100.00%)	(100.00%)
Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Weighted Average
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(41.70%)	(36.00%)
Non-recurring basis | Level 3 | Appraisal of collateral | OREO
Quantitative Information about Level 3 Fair Value Measurements
OREO	$ 1,137	$ 1,134
Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Minimum
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(6.60%)	(6.60%)
Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Maximum
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(100.00%)	(100.00%)
Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Weighted Average
Quantitative Information about Level 3 Fair Value Measurements
Appraisal adjustments (as a percent)	(47.90%)	(47.90%)