Fair Value Measurements (Tables)

3 Months Ended

Jun. 30, 2015

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table presents information about the GUC Trust’s assets and liabilities measured at fair value on a recurring basis at June 30, 2015 and March 31, 2015, and the valuation techniques used by the GUC Trust to determine those fair values.

	June 30, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	15,086	$	—	$	—	$	15,086
Marketable Securities:
Municipal commercial paper and demand notes		—		10,500		—		10,500
Corporate commercial paper		—		37,369		—		37,369
Holdings of New GM Securities:
New GM Common Stock		379,563		—		—		379,563
New GM Warrants		411,204		—		—		411,204
Total Assets	$	805,853	$	47,869	$	—	$	853,722
Liabilities:
Liquidating distributions payable	$	14,645	$	—	$	—	$	14,645

	March 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	19,150	$	—	$	—	$	19,150
Marketable Securities:
Municipal commercial paper and demand notes		—		12,064		—		12,064
Corporate commercial paper		—		18,880		—		18,880
Holdings of New GM Securities:
New GM Common Stock		427,151		—		—		427,151
New GM Warrants		490,826		—		—		490,826
Total Assets	$	937,127	$	30,944	$	—	$	968,071
Liabilities:
Liquidating distributions payable	$	7,714	$	—	$	—	$	7,714