Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Cash Flow Elements [Abstract]

Schedule of Supplemental Cash Flow Information

	Year Ended December 31,
	2012		2011		2010
I. Cash paid during the period for:
Interest	$	81,821	$	83,677	$	67,918
Income taxes	27,693		53,074		41,523
II. Non-cash investing and financing activities:
Issuance of stock dividend	414		378		357
Debt retired in debt conversion	55,778		10,993		—