Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 28, 2018	Dec. 29, 2017
Accrued Liabilities And Other Liabilities Current [Abstract]
Accrued compensation and benefits	$ 10,152	$ 5,289
Accrued bonuses	4,230	4,119
Accrued dividend payable		4,656
Acquisition earnout accruals	2,928	6,207
Deferred revenue	9,083	9,271
Accrued sales, use, franchise and VAT tax	1,506	3,670
Non-cash stock compensation accrual	872	1,890
Income tax payable	3,173	5,649
Other accrued expenses	2,121	2,263
Total accrued expenses and other liabilities	$ 34,065	$ 43,014