Liquidating Distributions (Details Textual)	Jun. 30, 2012
New GM Stock [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,106,095
New GM Series A Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,005,465
New GM Series B Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,005,465