Operating leases (Tables)

6 Months Ended

Jun. 30, 2020

Leases [Abstract]

Schedule of Lease Costs

Lease costs recorded under operating leases for the three and six months ended June 30, 2020 were as follows:

	Three Months Ended				Six Months Ended
	June 30, 2020		June 30, 2019		June 30, 2020		June 30, 2019
	(in thousands)				(in thousands)
Operating lease costs	$	7,768	$	8,964	$	15,857	$	17,619
Income from sub-leases	(246)		(547)		(514)		(1,067)
Net operating lease costs	$	7,522	$	8,417	$	15,343	$	16,552

Schedule of Operating Lease Maturity

Future minimum lease payments under non-cancelable leases as of June 30, 2020 were as follows:

	Minimum rental payments
	(in thousands)
	June 30, 2020
Due within 1 year	$	25,095
Due between 1 and 5 years	55,632
Thereafter	12,369
Total future minimum lease payments	93,096
Lease imputed interest	(6,027)
Total	$	87,069