Income Taxes - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2017 USD ($) examination	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Income Tax Contingency [Line Items]
Tax examinations in process | examination	1
Unrecognized tax benefits	$ 600,000		$ 600,000
Accrued unrecognized tax benefits interest and penalties	200,000		$ 200,000
Income tax reserve	0
(Benefit) Provision for Income Taxes	636,000	$ (1,160,000)
Bouchet & Co Lawsuit | Pending Litigation
Income Tax Contingency [Line Items]
(Benefit) Provision for Income Taxes	$ 1,300,000