Debt (Tables)

12 Months Ended

Dec. 31, 2011

Debt [Abstract]

Schedule of Debt

	2011			2010
$100 million Senior Notes, interest at 6.30%, due June 25, 2015	$	100,000		$	100,000
$870 million Credit Agreement, interest at LIBOR plus 105 basis points	376,715			556,481
Other local arrangements	28,300			24,722
	505,015			681,203
Less: current portion	(28,300		)	(10,902		)
Long-term debt	$	476,715		$	670,301