We lease various office facilities, furniture, equipment and vehicles under operating lease arrangements, some of which contain rent escalation clauses. Most of the leases contain purchase and/or renewal options at fair market and fair rental value, respectively. Rental expense relating to all operating leases was $13.8 million, $14.0 million and $14.0 million in 2012, 2011 and 2010, respectively. At December 31, 2012, future minimum rental payments under noncancelable operating leases are as follows:

	Operating Leases
	(in thousands)

2013	$	13,648
2014		10,658
2015		7,068
2016		5,196
2017		3,258
Thereafter		2,481
Total minimum lease payments	$	42,309