Acquisitions and Divestitures - Allocation of the Purchase Price (Details) - Riley Exploration $ in Thousands	Feb. 26, 2021 USD ($)
Current assets
Cash and cash equivalents	$ 860
Account receivable	325
Prepaid and other current assets	759
Total current assets	1,944
Oil and gas properties	4,525
Other property and equipment	91
Right of use assets	42
Other non-current assets	4
Deferred tax assets	2,987
Total assets acquired	9,593
Current liabilities
Accounts payable	130
Accrued liabilities	409
Current lease liabilities, operating	42
Current lease liabilities, financing	68
Total current liabilities	649
Asset retirement obligations	1,565
Total liabilities assumed	2,214
Net identifiable assets acquired	7,379
Goodwill	19,013
Net assets acquired	$ 26,392