Leases and Other

12 Months Ended

Dec. 31, 2017

Note 19. Leases and Other

We entered into operating leases for the use of certain of our offices, equipment, and other facilities. These leases expire over periods up to 40 years. Leases which expire are generally renewed or replaced by similar leases. Some leases contain scheduled rental increases accounted for on a straight-line basis.

As of December 31, 2017, our future minimum rental payments and related sublease rentals receivable with respect to non-cancelable operating leases with terms in excess of one year were as follows:

(in thousands)	Rental Payments		Receivable Under Subleases
2018	$	23,503	$	2,627
2019		20,299		2,384
2020		17,265		2,209
2021		8,812		2,267
2022		5,555		2,195
Thereafter		81,135		3,657
Total	$	156,569	$	15,339

Net rent expense under operating leases consisted of the following:

	December 31,
(in thousands)	2017			2016			2015
Minimum rentals	$	56,575		$	48,465		$	41,564
Sublease rentals		(1,525	)		(2,831	)		(3,457	)
Total rentals, net	$	55,050		$	45,634		$	38,107

The aggregate annual maturities and the related amounts representing interest on capital lease obligations are included in Note 11 – Debt and Capital Lease Obligations.

As of December 31, 2017, we had aggregate purchase obligations of $38.1 million related to various licensing agreements, consulting and other contracted services.