Investment In Affiliates , Narrative (Details) (USD $)	Mar. 31, 2012	Mar. 31, 2011
Origen Financial Services [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	22.90%	25.00%
Investment carrying value	$ 0
Origen Financial [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage	19.00%
Investment carrying value	0
Investment owned (in shares)	5,000,000
Market value of investment company	$ 6,300,000
Origen quoted market closing price (in dollars per share)	$ 1.26