Other Current Liabilities - Schedule of Other Current Liabilities (Details) - USD ($) $ in Thousands		Mar. 29, 2019	Dec. 28, 2018
Other Liabilities Disclosure [Abstract]
Accrued salaries and wages		$ 5,397	$ 3,172
Accrued insurance		666	1,061
Accrued consumption tax		1,155	995
Accrued bonuses		944	5,113
Income taxes payable		1,183	1,105
Other	[1]	1,972	1,985
Total other current liabilities		$ 11,317	$ 13,431

[1] No individual item in “Other” exceeds 5% of the other current liabilities