Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Mar. 19, 2012
Income Tax Disclosure [Abstract]
Net (loss) income	$ 201,700,000	$ (61,833,000)	$ 3,070,000
Income tax expense or benefit	$ 0	$ 0	$ 0
Income tax at the federal statutory rate of 35%	35.00%	35.00%	35.00%
Income tax paid	$ 0	$ 0	$ 0
Valuation allowance equal to net deferred federal income tax asset	100.00%	100.00%	100.00%
Abandoned stock				$ 8,370,000,000
Available and utilizable NOL	$ 6,000,000,000
NOLs expiration date	2031
Reserves for uncertain federal income tax positions	$ 0
Income tax interest income, expense or penalties	$ 0	$ 0	$ 0
Income tax examination, year under examination	2011