Income Tax Provision - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Current tax benefit or provision	$ 0	$ 0	$ 0	$ 0
Income taxes paid	0	0	0	0
Deferred tax benefit or provision	0	$ 0	0	$ 0
Capital losses carryovers	182,400,000		182,400,000
Net operating loss carryovers	97,300,000		$ 97,300,000
Capital loss carryovers begin to expire			Mar. 31, 2017
Net operating loss carryovers begin to expire			Mar. 31, 2032
Deferred tax asset	110,797,000		$ 110,797,000
Change in valuation allowance against net deferred tax assets	(900,000)		83,200,000
Deferred tax assets, valuation allowance	$ 119,135,000		$ 119,135,000