Restatement (Tables)

6 Months Ended

Jun. 30, 2013

Accounting Changes and Error Corrections [Abstract]

Schedule of Quantifying Prior Year Misstatements Corrected in Financial Statements [Table Text Block]

Balance Sheet
(In thousands)	7/1/2012
Accumulated depreciation
As filed	$	(1,111,530	)
Correction	(8,369		)
As restated	$	(1,119,899	)
Total assets
As filed	$	2,141,898
Correction	(8,369		)
As restated	$	2,133,529
Deferred Tax Liability
As filed	$	137,288
Correction	(3,180		)
As restated	$	134,108
Limited Partners' Equity
As filed	$	93,946
Correction	(5,189		)
As restated	$	88,757

Statements of Operations and Other Comprehensive Income
(In thousands except per unit amounts)	Three months ended			Six months ended			Twelve months ended
	7/1/2012			7/1/2012			7/1/2012
Depreciation and amortization
As filed	$	48,330		$	52,409		$	130,837
Correction	(421		)	(421		)	(421		)
As restated	$	47,909		$	51,988		$	130,416
Loss (gain) on impairment / retirement of fixed assets, net
As filed	$	(862	)	$	(770	)	$	1,599
Correction	—			—			8,790
As restated	$	(862	)	$	(770	)	$	10,389
Income (loss) before tax
As filed	$	47,543		$	(39,411	)	$	139,267
Correction	421			421			(8,369		)
As restated	$	47,964		$	(38,990	)	$	130,898
Provision (benefit) for taxes
As filed	$	11,221		$	(10,318	)	$	16,970
Correction	160			160			(3,180		)
As restated	$	11,381		$	(10,158	)	$	13,790
Net income (loss)
As filed	$	36,322		$	(29,093	)	$	122,297
Correction	261			261			(5,189		)
As restated	$	36,583		$	(28,832	)	$	117,108
Basic earnings per limited partner unit:
As filed	$	0.65		$	(0.52	)	$	2.21
Correction	0.01			—			(0.10		)
As restated	$	0.66		$	(0.52	)	$	2.11
Diluted earnings per limited partner unit:
As filed	$	0.65		$	(0.52	)	$	2.19
Correction	0.01			—			(0.09		)
As restated	$	0.66		$	(0.52	)	$	2.10