Fair Value Measurements (Tables)

9 Months Ended

Dec. 31, 2014

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 December 31, 2014 and March 31, 2014, and the valuation techniques used by the GUC Trust to determine those fair values.

	December 31, 2014
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash Equivalents:
Money market funds	$	10,079	$	—	$	—	$	10,079
Marketable Securities:
Municipal commercial paper and demand notes		—		10,921		—		10,921
Corporate commercial paper		—		21,167		—		21,167
Holdings of New GM Securities:
New GM Common Stock		402,635		—		—		402,635
New GM Warrants		441,199		—		—		441,199
Total Assets	$	853,913	$	32,088	$	—	$	886,001
Liabilities:
Liquidating distributions payable	$	6,033	$	—	$	—	$	6,033

	March 31, 2014
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash Equivalents:
Money market funds	$	8,953	$	—	$	—	$	8,953
Marketable Securities:
Municipal commercial paper and demand notes		—		18,005		—		18,005
Corporate commercial paper		—		26,377		—		26,377
Holdings of New GM Securities:
New GM Common Stock		526,533		—		—		526,533
New GM Warrants		587,545		—		—		587,545
Total Assets	$	1,123,031	$	44,382	$	—	$	1,167,413
Liabilities:
Liquidating distributions payable	$	42,111	$	—	$	—	$	42,111