Acquisitions - Allocation of Purchase Price (Details) - USD ($) $ in Thousands	Oct. 31, 2021	Jun. 30, 2021	May 13, 2021	Apr. 30, 2021
Assets acquired:
Goodwill	$ 454,548			$ 161,075
Buchanan Energy
Assets acquired:
Cash and cash equivalents			$ 5,517
Receivables			3,023
Inventories			18,516
Prepaid expenses			400
Property and equipment			293,176
Contractual customer relationships			31,100
Deferred income taxes			1,343
Finance lease right-of-use assets			10,689
Operating lease right-of-use assets			11,816
Other assets			24
Goodwill			261,811
Total assets			637,415
Liabilities assumed:
Accounts payable			24,736
Accrued expenses			8,395
Finance lease liabilities			12,369
Operating lease liabilities			15,666
Other long-term liabilities			3,717
Total liabilities			64,883
Net assets acquired and total purchase price			$ 572,532
Circle K
Assets acquired:
Inventories		$ 5,299
Property and equipment		6,150
Finance lease right-of-use assets		37,086
Operating lease right-of-use assets		24,164
Goodwill		31,662
Total assets		104,361
Liabilities assumed:
Accrued expenses		545
Finance lease liabilities		46,576
Operating lease liabilities		15,824
Total liabilities		62,945
Net assets acquired and total purchase price		$ 41,416