Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities
Net income	$ 77,997	$ 58,869	$ 66,014
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	33,150	30,682	27,597
Equity in earnings of SLC Pipeline, net of distributions	135	482	(419)
Change in fair value – interest rate swaps	0	1,464	175
Noncontrolling interest in earnings of Rio Grande Pipeline Company	0	0	1,579
Amortization of restricted and performance units	2,046	2,214	699
Gain on sale of interest in Rio Grande Pipeline Company	0	0	(14,479)
Operating costs of acquired assets for period prior to acquisition	2,348	0	0
(Increase) decrease in current assets:
Accounts receivable – trade	489	1,149	388
Accounts receivable – affiliates	(12,051)	(4,890)	(4,679)
Prepaid and other current assets	(1,406)	(36)	(146)
Current assets of discontinued operations	0	2,195	0
Increase (decrease) in current liabilities:
Accounts payable – trade	(767)	2,487	(1,956)
Accounts payable – affiliates	1,409	1,540	149
Accrued interest	763	4,654	18
Deferred revenue	(6,405)	2,035	(7,256)
Accrued property taxes	206	918	(74)
Other current liabilities	515	5	(248)
Other, net	(5,310)	(600)	833
Net cash provided by operating activities	93,119	103,168	68,195
Cash flows from investing activities
Additions to properties and equipment	(39,337)	(25,103)	(32,999)
Acquisition of tankage and terminal assets from HollyFrontier Corporation	0	(35,526)	(95,080)
Acquisition of logistics assets from Sinclair Oil Company	0	0	(25,665)
Investment in SLC Pipeline	0	0	(25,500)
Proceeds from sale of interest in Rio Grande Pipeline Company, net of transferred cash	0	0	31,865
Net cash used for investing activities	(39,337)	(60,629)	(147,379)
Cash flows from financing activities
Borrowings under credit agreement	118,000	66,000	239,000
Repayments of credit agreement borrowings	(77,000)	(113,000)	(233,000)
Repayments of promissory notes	(77,100)	0	0
Proceeds from issuance of senior notes	0	147,540	0
Proceeds from issuance of common units	75,815	0	133,301
Capital contribution from general partner	5,887	0	3,812
Distributions to unitholders	(91,506)	(84,426)	(61,188)
Distributions to noncontrolling interest	0	0	(1,500)
Purchase price in excess of transferred basis in assets acquired from HollyFrontier Corporation	0	(57,560)	(3,120)
Purchase of units for incentive grants	(1,641)	(2,704)	(616)
Deferred financing costs	(3,150)	(494)	0
Other	(221)	0	(266)
Net cash provided by (used for) financing activities	(50,916)	(44,644)	76,423
Cash and cash equivalents
Increase (decrease) for the year	2,866	(2,105)	(2,761)
Beginning of year	403	2,508	5,269
End of year	$ 3,269	$ 403	$ 2,508