Long-Term Obligations (Tables)

9 Months Ended

Sep. 30, 2012

Debt Disclosure [Abstract]

Summary of long-term obligations

	September 30, 2012			December 31, 2011
Revolver	$	—		$	—
Senior term notes at the adjusted Eurodollar rate + 1.75% (1.97% at September 30, 2012)	600,313			573,984
Other debt and capital lease obligations	39,128			44,869
Total debt obligations	639,441			618,853
Less - current portion	(34,996		)	(32,571		)
	$	604,445		$	586,282

Summary of Leverage ratios in effect from time to time

Level	Leverage Ratio	Applicable Margin for Eurodollar Rate Loans	Applicable Revolving Commitment Fee %
I	≥ 2.50:1.00	2.25%	0.50%
II	< 2.50:1.00 and ≥ 1.75:1.00	1.75%	0.375%
III	< 1.75:1.00 and ≥ 1.00:1.00	1.50%	0.25%
IV	< 1.00:1.00	1.25%	0.20%

Scheduled principal payments for senior term notes

Remainder of 2012	$	7,891
2013	35,508
2014	47,344
2015	51,289
2016	458,281
Total	$	600,313