Liquidating Distributions (Details Textual) (USD $)	Dec. 31, 2012
New GM Stock [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,168,970
New GM Series A Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,062,583
New GM Series B Warrants [Member]
Liquidating Distributions (Textual) [Abstract]
GUC Trust distribution obligation	1,062,583
Cash Distribution [Member]
Liquidating Distributions (Textual) [Abstract]
Fractional shares and warrants	10,666