8. Commitments

The Company has entered into leases covering principally office, research and warehouse space, office equipment and vehicles. Future minimum rental payments required under all operating leases that have remaining noncancelable lease terms in excess of one year are $6.9 million in 2012, $5.8 million in 2013, $5.0 million in 2014, $3.1 million in 2015, $2.0 million in 2016 and $4.4 million thereafter. Total rental expense on all operating leases was $9.1 million, $8.9 million, and $8.1 million for the years ended December 31, 2011, 2010, and 2009, respectively.

The Company has in place long-term supply contracts for the purchase of raw materials, transportation, and information systems and services. The following table represents the total payments made for the purchases under the aforementioned supply contracts:


	December 31
(Dollars in thousands)	2011		2010		2009
Raw and other materials	$	33,953	$	35,417	$	34,104
Transportation		8,782		7,663		6,853
Information systems and services		3,846		3,903		2,951

Total payments	$	46,581	$	46,983	$	43,908

Future minimum purchase requirements under the terms of the aforementioned contracts, as well as a new raw material contract that was entered into in February 2012, are as follows:


	Due in
(Dollars in thousands)	2012		2013		2014		2015		2016		Thereafter
Raw and other materials	$	39,660	$	27,964	$	20,715	$	2,808	$	—	$	—
Transportation		1,575		263		—		—		—		—
Information systems and services		2,397		2,397		2,397		2,397		—		—

Total contractual cash obligations	$	43,632	$	30,624	$	23,112	$	5,205	$	—	$	—

The Company also plans to construct a new reactivation facility to serve the City of Phoenix in Maricopa County, Arizona as part of a ten year service agreement. Construction is expected to commence in 2012.