Operating Lease - Summary of Weighted Average Remaining Lease Term, Discount Rate and Supplemental Cash Flow Information for All Operating Leases (Details) $ in Thousands	3 Months Ended
	Mar. 29, 2019 USD ($)
Lease Cost [Abstract]
Weighted average remaining lease term (years)	3 years 6 months 14 days
Weighted average remaining discount rate	1.73%
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflow from operating leases	$ 1,536
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 2,402