Summary of Differences Between US Federal Statutory Tax Rate and Company's Consolidated Effective Tax Rate (Detail)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	35.00%	35.00%	35.00%
State income taxes (net of federal benefit)	2.50%	2.00%	3.80%
Cessation of Spanish operations	(8.00%)	0.00%	0.00%
Research and development credit	(1.30%)	(19.50%)	(0.00%)
Tax (windfall) shortfall on share-based awards	(1.10%)	0.00%	0.00%
Reserves for uncertain tax positions	(0.20%)	2.90%	3.50%
Tax Rate Changes	(49.60%)	0.00%	0.00%
Valuation adjustment related to foreign tax credits	3.50%	(2.30%)	(2.20%)
Increase in valuation allowance due to net operating loss	3.00%	0.00%	0.00%
Impairment	3.20%	0.00%	0.00%
Impact of Foreign Ops	(0.70%)	0.00%	0.00%
Out-of-period adjustments	0.00%	2.60%	4.50%
Other	1.10%	(0.90%)	(3.50%)
Effective Tax Rate	(12.60%)	19.80%	41.10%