Guaranteed Preferred Beneficial Interest in Junior Subordinated Debentures ("TRUPs") (Narrative) (Details) - USD ($)			3 Months Ended
	Jun. 15, 2005	Jul. 22, 2004	Mar. 31, 2020
Capital Trust I I [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 5,000,000.0
Basis spread on variable rate			1.70%
Additional amount contributed to purchase debt	155,000
Junior subordinated notes purchased	$ 5,200,000
Maturity date			Jun. 15, 2035
Capital Trust I [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		$ 7,000,000.0
Basis spread on variable rate		2.60%
Additional amount contributed to purchase debt		$ 217,000
Junior subordinated notes purchased		$ 7,200,000
Maturity date			Jul. 22, 2034