Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2018

Commitments and Contingencies.

Summary of future minimum lease payments

Twelve months ended September 30,	Future minimum lease payments
	(in thousands)
2019	$	15,243
2020		15,367
2021		12,967
2022		10,487
2023		9,572
Thereafter		25,538
	$	89,174