Employee Benefit Plans And Equity-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2011

Equity-Based Compensation Plans And Employee Benefit Plans [Abstract]

Summary Of Service-Based And Performance-Based Awards

	Service-Based Awards								Performance-Based Awards
	Number of Phantom Units			Average Grant Date Fair Value		Total Value			Number of Phantom Units			Average Grant Date Fair Value		Total Value
Unvested at December 31, 2010		62,927		$	20.64	$	1,299			—		$	—	$	—
Granted		47,680		$	27.03		1,289			104,236		$	28.19		2,938
Forfeited		(845	)	$	28.19		(24	)		(1,266	)	$	28.19		(36	)
Unvested at December 31, 2011		109,762		$	23.36	$	2,564			102,970		$	28.19	$	2,902

Assumptions Used To Determine Fair Value Of Rights

	December 31, 2011	December 31, 2010	December 31, 2009
Expected life of rights (in years)	0.00 - 3.41	0.00 - 4.41	0.25 - 5.50
Risk-free interest rate	0.00% to 0.58%	0.12% - 1.73%	0.05% - 2.52%
Expected unit price volatility	40.6%	41.9%	43.8%
Expected future distribution yield	6.00%	6.00%	8.50%

Reconciliation Of Rights Activity

Stock Appreciation Rights	Rights			Weighted Average Strike Price		Weighted Average Contractual Remaining Term (Yrs)		Aggregate Intrinsic Value
Outstanding at December 31, 2010		913,690		$	17.65
Exercised during 2011		(230,069	)	$	16.57
Forfeited or expired during 2011		(21,137	)	$	17.00
Outstanding at December 31, 2011		662,484		$	17.97		5.7	$	6,778
Exercisable at December 31, 2011		532,816		$	18.34		5.5	$	5,287

Expense Related To Equity-Based Compensation Plans

Statement of Operations	2011		2010		2009
Supply and logistics operating costs	$	181	$	2,611	$	1,467
Refinery services operating costs		226		833		445
Pipeline operating costs		135		575		364
General and administrative expenses		2,013		2,098		2,132
Total	$	2,555	$	6,117	$	4,408