Leases (Tables)

9 Months Ended

Sep. 30, 2019

Leases

Schedule of components of lease expense

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Lease expense:
Operating lease expense	$	6,868	$	6,144	$	19,662	$	16,789
Variable lease expense		1,463		1,185		4,090		3,487
Rent expense	$	8,331	$	7,329	$	23,752	$	20,276