Operating leases (Tables)

9 Months Ended

Sep. 30, 2020

Leases [Abstract]

Schedule of Lease Costs

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

	Three Months Ended				Nine Months Ended
	September 30, 2020		September 30, 2019		September 30, 2020		September 30, 2019
	(in thousands)				(in thousands)
Operating lease costs	$	7,417	$	8,713	$	23,274	$	26,332
Income from sub-leases	(268)		(378)		(781)		(1,445)
Net operating lease costs	$	7,149	$	8,335	$	22,493	$	24,887

Schedule of Operating Lease Maturity

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

	Minimum rental payments
	(in thousands)
	September 30, 2020
Due within 1 year	$	26,237
Due between 1 and 5 years	54,736
Thereafter	11,491
Total future minimum lease payments	92,464
Lease imputed interest	(5,665)
Total	$	86,799