| Leases - Summary of components of lease cost recorded on the consolidated statements of operations (Details) - USD ($) $ in Thousands | 3 Months Ended | |
|---|---|---|
| Mar. 31, 2021 | Mar. 31, 2020 | |
| Finance lease cost: | ||
| Depreciation of right-of-use assets | $ 3,317 | $ 3,192 | 
| Interest on lease liabilities | 4,446 | 4,326 | 
| Operating lease costs included in store operating expenses | 32,334 | 27,244 | 
| Operating lease costs included in general and administrative expenses | 396 | 327 | 
| Lease cost related to variable lease payments, short-term leases and leases of low value assets | 375 | 150 | 
| Right-of-use asset impairment charges | 111 | 639 | 
| Total lease costs | $ 40,979 | $ 35,878 | 
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- Definition Lease cost related to variable lease payments, short term leases and leases of low value assets No definition available. 
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- Definition Operating lease costs included in general and administrative expenses. No definition available. 
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- Definition Operating lease costs included in store operating expenses. No definition available. 
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of interest expense on finance lease liability. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- References No definition available. 
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