Restructuring Activities - Additional Information (Detail) - USD ($)		3 Months Ended	9 Months Ended
	Oct. 03, 2016	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2016
Restructuring Cost And Reserve [Line Items]
Restructuring activity, announcement date			Oct. 03, 2016
Restructuring expenses		$ 809,000	$ 809,000
Restructuring activities, description			One-time employee termination benefits are comprised of severance, benefits and related costs, all of which are expected to result in cash expenditures. The Company anticipates that the majority of these payments will be made during the fourth quarter of 2016.
Contractual Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring expenses		$ 800,000	$ 800,000
One-time Employee Termination Benefits [Member] | Scenario Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Expected additional restructuring expenses				$ 4,000
Subsequent Event [Member]
Restructuring Cost And Reserve [Line Items]
Reduction in headcount, percent	22.00%