Commitments and Contingent Liabilities (Tables)

12 Months Ended

Dec. 31, 2011

Commitments and Contingencies Disclosure [Abstract]

Aggregate future minimum lease payments for operating and capital leases

The aggregate future minimum lease payments for operating and capital leases as of December 31, 2011 are as follows:

	Operating		Capital
2012	$	62,948	$	1,606
2013		45,275		1,269
2014		35,664		527
2015		23,593		496
2016		16,252		408
2017 and thereafter		61,345		1,039