Equity Investments (Tables)

12 Months Ended

Dec. 31, 2013

Equity Investments [Abstract]

Schedule of Financial Information Related to Unconsolidated Entities-Balance Sheet

	December 31,
	2013		2012
Current assets	$	235,679	$	240,086
Noncurrent assets		790,297		847,484
Total assets	$	1,025,976	$	1,087,570
Current liabilities	$	99,330	$	89,933
Noncurrent liabilities		1,616		1,941
Members’ equity		924,909		995,569
Noncontrolling interest		121		127
Total liabilities and equity	$	1,025,976	$	1,087,570

Schedule of Financial Information Related to Unconsolidated Entities Included in Consolidated Statement of Income

	Year Ended December 31,
	2013		2012		2011
Revenues	$	1,246,183	$	1,236,915	$	1,230,146
Operating costs and expenses		1,116,745		1,079,055		1,068,212
Income from continuing operations before taxes		129,576		157,762		162,124