Fair Value Measurements (Tables)

9 Months Ended

Dec. 31, 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 December 31, 2015 and March 31, 2015, and the valuation techniques used by the GUC Trust to determine those fair values.

	December 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash Equivalents:
Money market funds	$	21,136	$	—	$	—	$	21,136
Marketable Securities:
U.S. Treasury bills		—		637,179		—		637,179
U.S. government agency securities		—		5,994		—		5,994
Total Assets	$	21,136	$	643,173	$	—	$	664,309
Liabilities:
Liquidating distributions payable	$	4,612	$	—	$	—	$	4,612

	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 variable 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