Commitments (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule of Minimum Lease Payments

At December 31, 2012, future minimum annual lease payments under all noncancelable leases are as follows:

2013	$	42,152
2014	25,546
2015	13,668
2016	8,827
2017	3,615
Thereafter	14,493
	$	108,301