Long-Term Obligations (Tables)

3 Months Ended

Mar. 31, 2012

Debt Disclosure [Abstract]

Summary of long-term obligations

	March 31, 2012			December 31, 2011
Revolver	$	—		$	—
Senior term notes at the Adjusted Eurodollar rate + 1.75% (2.00% at March 31, 2012)	616,094			573,984
Other debt and capital lease obligations	40,724			44,869
Total debt obligations	656,818			618,853
Less - current portion	(34,920		)	(32,571		)
	$	621,898		$	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

2012 (1)	$	23,672
2013	35,508
2014	47,344
2015	51,289
2016	458,281
Thereafter	—
Total	$	616,094

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(1) Relates to the period from April 1, 2012 through December 31, 2012.