Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 1,602,000	$ 1,780,000
Net income (losses) from foreign currency transactions	$ (99,000)	$ 80,000	$ 11,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets estimated useful life	1 year
Maximum
Summary Of Significant Accounting Policies [Line Items]
Intangible assets estimated useful life	13 years
Computers and Software
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset	3 years
Machinery and Equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset	5 years
Furniture and Fixtures
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset	7 years
Vehicles
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives of asset	4 years
Leasehold Improvements
Summary Of Significant Accounting Policies [Line Items]
Lease and leasehold improvements estimated useful lives	Remaining lease term
Pledged as Collateral for Standby Letter of Credit
Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 1,000,000
Collateral for Various Guarantees
Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 602,000