Junior Subordinated Debentures (Details) (USD $)			12 Months Ended				12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2007 Junior Subordinated Debentures [Member]	Mar. 31, 2014 Junior Subordinated Debentures [Member]	Mar. 31, 2014 Junior Subordinated Debentures [Member] Minimum [Member]	Mar. 31, 2014 Junior Subordinated Debentures [Member] Maximum [Member]	Dec. 31, 2007 Junior Subordinated Debentures [Member] LIBOR [Member]	Dec. 31, 2007 Trust Preferred Securities [Member]
Debt Instrument [Line Items]
Junior subordinated debentures	$ 40,000,000	$ 40,000,000	$ 40,000,000.0					$ 40,000,000.0
Debt Instrument, Term			10 years
Fixed rate			9.06%
Basis spread on variable rate							3.70%
Fixed charge coverage ratio				3.64	1.75
Total debt to net worth				1.71		3.00
Covenant, percent of net income					50.00%
Covenant, percent of all proceeds of equity interests					50.00%
Covenant, net worth				952,500,000	75,000,000.0
Covenant, net worth after net worth exceeds seventy five million					40,000,000
Covenant, tangible net worth				$ 901,900,000	$ 15,000,000.0
Covenant, percent of net income, until net worth exceeds seventy five million					60.00%