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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
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Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025 | Dec. 31, 2024
Schedule Of Accounting Policies [Line Items] |  |  |  |  |  |
Contract cost, amortization period | 1 year |  | 1 year |  |  |
Description of trade receivables, period |  |  | Balances due in respect of credit cards processed through the Company’s fuel suppliers and other providers are collected within two to three days depending upon the day of the week, and time of day, of the purchase. Receivables from dealers and customer credit accounts are typically due within one to 30 days and are stated as amounts due. Accounts that are outstanding longer than the payment terms are considered past due. |  |  |
Trade receivables, net | $ 151,070 | $ 112,300 | $ 151,070 | $ 112,300 | $ 87,331 | $ 95,800
Capitalized costs | 9,000 | 7,400 | 9,000 | 7,400 | $ 8,200 | $ 6,700
Location, Statement of Income, Balance [Axis]: us-gaap:DepreciationAndAmortization |  |  |  |  |  |
Schedule Of Accounting Policies [Line Items] |  |  |  |  |  |
Amortization expense | 2,200 | 1,600 | 4,200 | 3,000 |  |
Location, Statement of Income, Balance [Axis]: arko:FuelCosts1 |  |  |  |  |  |
Schedule Of Accounting Policies [Line Items] |  |  |  |  |  |
Amortization expense | $ 700 | $ 500 | $ 1,200 | $ 900 |  |

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