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Holly Energy Partners (Narrative) (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2014
USD ($)
Dec. 31, 2016
USD ($)
Sep. 30, 2016
USD ($)
$ / shares
Mar. 31, 2016
USD ($)
mi
Jun. 30, 2016
USD ($)
shares
Sep. 30, 2016
USD ($)
mi
$ / shares
shares
bbl
Dec. 31, 2016
USD ($)
Customers
mi
bbl
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Feb. 22, 2016
Schedule of Equity Method Investments [Line Items]                    
Percentage of general partner interest             50.00%      
Concentration risk, precentage of total revenues             10.00%      
Payments to Acquire Property, Plant, and Equipment             $ 0 $ 0    
Purchase of equity method investment - HEP             42,627 55,032    
Deferred Credits and Other Liabilities, Noncurrent       $ 38,900            
Production barrel capacity per day | bbl           15,600        
Repayment of term loan     $ 39,500 39,500     350,000 0 $ 0  
Loss on early extinguishment of debt $ 7,700           (8,718) (1,370) (7,677)  
Long-term Purchase Commitment, Amount       26,000            
General Partners' Contributed Capital     $ 2,100   $ 500 $ 2,100        
Net proceeds from common unit offerings - HEP         $ 23,000 $ 103,000 $ 125,870 0 0  
Limited Partners' Capital Account, Units Issued | shares         703,455          
Common Unit Issuance Program         $ 200,000          
UNEV Pipeline [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Equity Method Investment, Ownership Percentage   75.00%         75.00%      
Frontier Pipeline [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Equity Method Investment, Ownership Percentage   50.00%         50.00%      
Length of pipeline | mi             289      
Production barrel capacity per day | bbl             72,000      
SLC Pipeline [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Equity Method Investment, Ownership Percentage   25.00%         25.00%      
HEP                    
Schedule of Equity Method Investments [Line Items]                    
Percentage of ownership in variable interest entity   37.00%         37.00%      
Percentage of general partner interest     2.00%       2.00%      
Number of significant customers | Customers             2      
Concentration risk, precentage of total revenues             83.00%      
Payments to Acquire Other Productive Assets   $ 278,000                
Equity Method Investment, Ownership Percentage   75.00% 50.00%     50.00% 75.00%      
Payments to Acquire Property, Plant, and Equipment             $ 62,000      
Purchase Obligation Minimum Annualized Payment             15,100      
Purchase of equity method investment - HEP             42,627 $ 55,032 $ 0  
Length of pipeline | mi           87        
Pipeline Throughput Capacity | bbl           80,000        
Extinguishment of Debt, Amount       30,800            
Loss on early extinguishment of debt       $ 8,700            
Long-term Purchase Commitment, Amount   $ 56,700         321,000      
Partners' Capital Account, Units, Sold in Private Placement | shares           3,420,000        
Shares Issued, Price Per Share | $ / shares     $ 30.18     $ 30.18        
Net proceeds from common unit offerings - HEP             $ 125,870      
Osage Pipeline [Member] [Member]                    
Schedule of Equity Method Investments [Line Items]                    
Equity Method Investment, Ownership Percentage                   50.00%
Length of pipeline | mi       135