Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

	Capital		Operating
	Leases		Leases
Year Ended December 31,
2013	$	12,836	$	88,997
2014	11,134		74,485
2015	9,448		65,072
2016	7,845		44,453
2017	7,542		34,025
Thereafter	28,409		132,637
Total minimum lease payments	$	77,214	$	439,669
Less amount representing interest (0.75% – 7.36%)	18,160
Present value of minimum lease payments	59,054
Less amount due in one year	8,941
Total Long-Term Capital Lease Obligation	$	50,113