Restructuring - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 30, 2016
Restructuring Cost And Reserve [Line Items]
Restructuring, initiation date		Mar. 08, 2016
Restructuring, estimated completion date		Dec. 30, 2016
Restructuring expenses	$ 626	$ 1,159
Lease payment obligation		$ 4,300
Workforce Reduction [Member]
Restructuring Cost And Reserve [Line Items]
Percentage of workforce reduced		19.00%
Cost incurred related to workforce reduction	$ 500	$ 1,100
Workforce Reduction [Member] | Scenario, Forecast [Member]
Restructuring Cost And Reserve [Line Items]
Estimated restructuring expenses			$ 1,800