Accrued Expenses and Other Liabilities (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Dec. 28, 2018
Accrued Liabilities And Other Liabilities Current [Abstract]
Accrued compensation and benefits	$ 7,609	$ 5,012
Accrued bonuses	950	5,064
Accrued dividend payable	5,788	5,407
Acquisition earnout accruals	1,251	2,559
Deferred revenue	10,498	8,259
Accrued sales, use, franchise and VAT tax	2,222	3,077
Non-cash stock compensation accrual	538	872
Income tax payable	2,535	1,769
Other accrued expenses	1,723	2,479
Total accrued expenses and other liabilities	$ 33,114	$ 34,498