Liquidating Distributions (Details Textual) (USD $)	Sep. 30, 2012
New GM Stock [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,279,688
New GM Series A Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,163,258
New GM Series B Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,163,258
Cash Distribution [Member]
Liquidating Distributions (Textual) [Abstract]
Fractional shares and warrants	6,000