Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases

Future minimum lease payments under non-cancelable operating leases at December 31, 2012 were as follows:

Years ending December 31,
2013	$	90,936
2014	69,945
2015	49,835
2016	32,355
2017	18,647
Thereafter	22,360
Total minimum lease payments	$	284,078