Equity Investments (Tables)

9 Months Ended

Sep. 30, 2012

Equity Investments [Abstract]

Schedule of Financial Information Related to Unconsolidated Entities

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2012		2011		2012		2011
Revenues	$	294,461	$	299,099	$	926,886	$	927,392
Operating costs and expenses		266,012		267,857		817,572		802,870
Income from continuing operations before taxes		28,421		31,211		109,238		124,447