Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments

Future minimum lease payments, as of December 31, 2017, associated with these agreements with terms of one year or more are as follows: 

Years Ending December 31:	(amounts in thousands)
2018	$	6,700
2019	5,180
2020	4,438
2021	3,993
2022	3,698
Thereafter	8,732
	$	32,741