Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax provision	$ 73,000	$ 559,000	$ 657,000	$ 303,000
Effective tax rate	62.30%		52.50%
Deferred tax asset valuation allowance	$ 4,500,000		$ 4,500,000		$ 4,500,000
Pre-tax income or losses period			3 years
Interest and penalties related to unrecognized tax benefits	0		$ 0
Uncertain tax portions	$ 0		$ 0