Commitments and Contingencies - Schedule of Maturities of Operating Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Dec. 30, 2018
Operating Lease Liabilities Payments Due [Abstract]
Remainder of 2019 (9 months)	$ 1,144
2020	1,554
2021	1,541
2022	319
Total lease payments	4,558
Less: Imputed interest	(356)
Lease liabilities	$ 4,202	$ 4,500