Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Cash and cash equivalents (HEP: $8,565 and $7,776, respectively)	$ 781,467	$ 630,757
Accounts receivable: Product and transportation (HEP: $14,534 and $12,803, respectively)	669,978	659,530
Materials, supplies and other (HEP: $916 and $916, respectively)	273,553	220,554
Prepayments and other (HEP: $2,092 and $1,395, respectively)	54,757	36,909
Properties, plants and equipment, at cost (HEP: $2,024,405 and $2,011,915, respectively)	6,557,922	6,523,789
Less accumulated depreciation (HEP: $(430,339) and $(408,599), respectively)	(1,884,643)	(1,810,515)
Goodwill (HEP: $312,059 and $310,610, respectively)	2,242,980	2,244,744
Intangibles and other (HEP: $201,699 and $206,167, respectively)	432,837	439,989
Accounts payable (HEP $13,269 and $14,637, respectively)	1,194,082	1,220,795
Accrued liabilities (HEP: $28,313 and $33,214, respectively)	235,207	198,756
Long-term debt (HEP: $1,390,952 and $1,507,308, respectively)	2,382,874	2,498,993
Deferred income taxes (HEP: $565 and $525, respectively)	679,899	647,785
Other long-term liabilities (HEP: $62,886 and $62,590, respectively)	$ 226,383	$ 225,726
HollyFrontier Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	320,000,000	320,000,000
Common stock, shares issued	256,015,579	256,015,550
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Treasury stock, shares	79,236,939	78,607,928
HEP
Cash and cash equivalents (HEP: $8,565 and $7,776, respectively)	$ 8,565	$ 7,776
Accounts receivable: Product and transportation (HEP: $14,534 and $12,803, respectively)	14,534	12,803
Materials, supplies and other (HEP: $916 and $916, respectively)	916	916
Prepayments and other (HEP: $2,092 and $1,395, respectively)	2,092	1,395
Properties, plants and equipment, at cost (HEP: $2,024,405 and $2,011,915, respectively)	2,024,405	2,011,915
Less accumulated depreciation (HEP: $(430,339) and $(408,599), respectively)	(430,339)	(408,599)
Goodwill (HEP: $312,059 and $310,610, respectively)	312,059	310,610
Intangibles and other (HEP: $201,699 and $206,167, respectively)	201,699	206,167
Accounts payable (HEP $13,269 and $14,637, respectively)	13,269	14,637
Accrued liabilities (HEP: $28,313 and $33,214, respectively)	28,313	33,214
Long-term debt (HEP: $1,390,952 and $1,507,308, respectively)	1,390,952	1,507,308
Deferred income taxes (HEP: $565 and $525, respectively)	565	525
Other long-term liabilities (HEP: $62,886 and $62,590, respectively)	$ 62,886	$ 62,590