Leases (Tables)

3 Months Ended

Mar. 31, 2018

Leases

Schedule of components of lease expense

	Three Months Ended March 31,
	2018		2017
Lease expense:
Operating lease expense	$	5,227	$	5,088
Variable lease expense		1,173		874
Rent expense	$	6,400	$	5,962

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 March 31, 2018, are as follows (in thousands):

	Operating
Period / Year Ending December 31,	Leases
2018	$	14,653
2019		22,661
2020		22,991
2021		22,740
2022		15,613
Thereafter		12,039
Total lease payments	$	110,697
Less imputed interest		(13,389)
Total	$	97,308