Asset Exchange Transactions With Circle K - Schedule of Divestiture of Properties in Closed Asset Exchange Transaction (Details) - USD ($) $ in Thousands	Sep. 30, 2019	May 21, 2019
First Asset Exchange [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Deferred income taxes	$ 4,800
Second Asset Exchange [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Deferred income taxes	$ (200)
CAPL Properties [Member] | Discontinued Operations Disposed of by Sale [Member] | First Asset Exchange [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Property and equipment, net		$ 40,686
Right-of-use assets, net		3,077
Intangible assets, net		2,135
Total assets		45,898
Current portion of operating lease obligations		448
Operating lease obligations, less current portion		2,629
Deferred income taxes		4,804
Asset retirement obligations		821
Total liabilities		8,702
Net assets divested		37,196
CAPL Properties [Member] | Discontinued Operations Disposed of by Sale [Member] | Second Asset Exchange [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Property and equipment, net		37,955
Total assets		37,955
Deferred income taxes		(151)
Asset retirement obligations		318
Total liabilities		167
Net assets divested		$ 37,788