Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Operating loss carryforwards	$ 6,300,000
Uncertain tax positions	0	$ 0	$ 0
Recognized interest income, net of Federal income tax expense	11,000	465,000	$ 0
Amount of accrued interest or penalties	$ 0	$ 0