Income Tax Provision - Additional Information (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Statutory tax rate	39.60%	39.60%
Current tax benefit or provision	$ 0	$ 0
Income taxes paid	0	0
Deferred tax benefit or provision	0	$ 0
Capital losses carryovers	187,000,000		$ 187,000,000
Net operating losses carryovers	$ 86,600,000
Capital loss carryovers begin to expire	Mar. 31, 2017
Net operating loss carryovers begin to expire	Mar. 31, 2032
Deferred tax asset	$ 108,377,000
Change in valuation allowance against net deferred tax assets	62,000,000
Deferred tax assets, valuation allowance	$ 98,015,000