Reserves for Expected Costs of Liquidation and Residual Wind-Down Claims (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Reserves for Expected Costs of Liquidation and Residual Wind-Down Claims (Textual) [Abstract]
Net reduction in (additions to) reserves for Expected Costs of Liquidation	$ (1,678)	$ 720
Reserve for Expected Reporting Costs [Member]
Reserves for Expected Costs of Liquidation and Residual Wind-Down Claims (Textual) [Abstract]
Net reduction in (additions to) reserves for Expected Costs of Liquidation	(1,819)	3,961
Reserve for Expected Wind-Down Costs [Member]
Reserves for Expected Costs of Liquidation and Residual Wind-Down Claims (Textual) [Abstract]
Net reduction in (additions to) reserves for Expected Costs of Liquidation	$ 141	$ (3,241)