Variable Interest Entities (Details) (USD $)		1 Months Ended			9 Months Ended
	Sep. 30, 2013	Dec. 31, 2005 Trust Preferred Security Offering, 2005 [Member]	Jun. 30, 2007 Trust Preferred Security Offering, 2007 [Member]	Jun. 30, 2007 Trust Preferred Security Offering, 2007 [Member] Unsecured Debt [Member]	Sep. 30, 2013 Maximum [Member]
Variable Interest Entity [Line Items]
Limited partnership, percent owned					1.00%
Carrying amount of investments	$ 325,000
Payments to acquire trust preferred securities		9,000,000	3,000,000
Subordinated debt		9,279,000		3,093,000
Proceeds from issuance of trust preferred securities		9,005,000	2,995,000
Equity investment		$ 279,000	$ 93,000