Lease (Tables)

9 Months Ended

Sep. 25, 2020

Leases [Abstract]

Components of Lease Expenses

The components of lease expense are as follows (in thousands):

	Three months ended				Nine months ended
	September 25, 2020		September 27, 2019		September 25, 2020		September 27, 2019
Operating lease cost	$	1,873	$	2,641	$	6,556	$	6,868
Variable lease cost	681		837		2,183		2,360
Total lease cost	$	2,554	$	3,478	$	8,739	$	9,228

Supplemental cash flow information related to leases are as follows (in thousands):

	Three months ended				Nine months ended
	September 25, 2020		September 27, 2019		September 25, 2020		September 27, 2019
Cash paid for amounts included in the measurement of operating lease liabilities	$	3,134	$	2,655	$	7,772	$	6,937
Right-of-use assets obtained in exchange for operating lease obligations	$	69	$	—	$	1,740	$	10,305