Leases (Tables)

9 Months Ended

Sep. 30, 2018

Leases

Schedule of components of lease expense

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Lease expense:
Operating lease expense	$	6,144	$	5,078	$	16,789	$	15,256
Variable lease expense		1,185		999		3,487		2,714
Rent expense	$	7,329	$	6,077	$	20,276	$	17,970

Schedule of future minimum lease payments to be paid under noncancelable leases

The future minimum lease payments to be paid under noncancelable leases in effect at September 30, 2018, are as follows (in thousands):

	Operating
Period / Year Ending December 31,	Leases
2018	$	4,221
2019		25,725
2020		26,662
2021		26,392
2022		25,995
Thereafter		153,753
Total lease payments	$	262,748
Less imputed interest		(58,324)
Total	$	204,424