Fair Value of Assets and Liabilities (Details 2) (Trust preferred securities, USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014 Security	Dec. 31, 2013 Security
Trust preferred securities
Breakdown of trust preferred securities
Total number of trust preferred securities	2	12
Par value	$ 1,865	$ 14,366
Number not considered OTTI	1	1
Par value	865	956
Number considered OTTI	1	11
Par value	1,000	13,410
Life-to-date impairment recognized in earnings	140	2,305
Life-to-date impairment recognized in other comprehensive income	982	1,718
Total life-to-date impairment	$ 1,122	$ 4,023