Leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Lease Costs

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Operating lease expense	$	3,045	$	2,837	$	6,067	$	5,472
Short-term lease expense	26		327		53		573
Variable lease expense	546		602		1,116		1,116
Total lease expense	$	3,617	$	3,766	$	7,236	$	7,161

Supplemental balance sheet information related to operating leases is as follows (in thousands):

	June 30, 2020		December 31, 2019
Operating lease right-of-use assets	$	30,341	$	35,479
Operating lease liabilities	$	34,016	$	39,291