Variable Interest Entities (Details) (USD $)	1 Months Ended		3 Months Ended
	Dec. 31, 2005	Jun. 30, 2007	Mar. 31, 2015
Variable Interest Entity [Line Items]
Carrying amount of investments			294,000
Trust Preferred Security Offering, 2005 [Member]
Variable Interest Entity [Line Items]
Payments to acquire trust preferred securities	9,000,000
Subordinated debt	9,279,000
Proceeds from issuance of trust preferred securities	9,005,000
Equity investment	279,000
Trust Preferred Security Offering, 2007 [Member]
Variable Interest Entity [Line Items]
Payments to acquire trust preferred securities		3,000,000
Proceeds from issuance of trust preferred securities		2,995,000
Equity investment		93,000
Trust Preferred Security Offering, 2007 [Member] | Unsecured Debt [Member]
Variable Interest Entity [Line Items]
Subordinated debt		$ 3,093,000
Maximum [Member]
Variable Interest Entity [Line Items]
Limited partnership, percent owned			1.00%