Debt (Tables)

9 Months Ended

Sep. 30, 2011

Debt [Abstract]

Outstanding Debt Balances

	September 30, 2011		December 31, 2010
Notes payable – current:
Uncommitted lines of credit	$	37,111	$	15,038
Other		155		—
	$	37,266	$	15,038
Long-term debt:
Credit facility	$	352,000	$	235,000
Senior notes		300,000		300,000
Industrial development revenue bonds		11,900		11,900
Other		2,393		3,468
	$	666,293	$	550,368