Immaterial Restatement

12 Months Ended

Dec. 31, 2012

Immaterial Restatement [Abstract]

Accounting Changes and Error Corrections [Text Block]

Immaterial Restatement:

The Partnership uses the composite depreciation method for the group of assets acquired as a whole in 1983, as well as for groups of assets in each subsequent business acquisition. Upon the normal retirement of an asset within a composite group, the Partnership's practice generally has been to extend the depreciable life of that composite group beyond its original estimated useful life. In conjunction with the preparation of the Partnership's financial statements for the three months ended July 1, 2012, management determined that this methodology was not appropriate. As a result, the Partnership revised the useful lives of its composite groups to their original estimated useful life (ascribed upon acquisition) and

corrected previously computed depreciation expense (and accumulated depreciation). Management evaluated the amount and nature of these adjustments and concluded that they were not material to either the Partnership's prior annual or quarterly financial statements. Nonetheless, the historical financial statement amounts included in this filing have been corrected for this error.

The tables below detail the effects of such depreciation adjustments (including the related deferred income tax impact) on previously presented historical financial statement amounts:

Balance Sheets
	12/31/2011
Accumulated depreciation
As originally filed	$	(1,044,589	)
Correction	(18,599		)
As restated	$	(1,063,188	)
Total assets
As originally filed	$	2,074,557
Correction	(18,599		)
As restated	$	2,055,958
Deferred Tax Liability
As originally filed	$	135,446
Correction	(1,679		)
As restated	$	133,767
Limited Partners' Equity
As originally filed	$	182,438
Correction	(16,920		)
As restated	$	165,518

Statements of Operations and Comprehensive Income
For the years ended December 31,	2011			2010
Depreciation and amortization
As originally filed	$	123,805		$	126,796
Correction	2,032			2,060
As restated	$	125,837		$	128,856
Income (loss) before tax
As originally filed	$	83,995		$	(28,322	)
Correction	(2,032		)	(2,060		)
As restated	$	81,963		$	(30,382	)
Provision (benefit) for taxes
As originally filed	$	11,837		$	3,245
Correction	(620		)	(575		)
As restated	$	11,217		$	2,670
Net income (loss)
As originally filed	$	72,158		$	(31,567	)
Correction	(1,412		)	(1,485		)
As restated	$	70,746		$	(33,052	)
Basic earnings per limited partner unit:
As originally filed	$	1.30		$	(0.57	)
Correction	(0.02		)	(0.03		)
As restated	$	1.28		$	(0.60	)
Diluted earnings per limited partner unit:
As originally filed	$	1.29		$	(0.57	)
Correction	(0.02		)	(0.03		)
As restated	$	1.27		$	(0.60	)