Franchise arrangements (Schedule of Future Minimum Rent Payments Due to the Company Under Exsisting Franchised Agreements) (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Franchise Arrangements [Line Items]
2020	$ 63,487
2021	57,381
2022	51,090
2023	44,152
2024	37,666
Thereafter	183,577
Total	437,353
Owned sites
Franchise Arrangements [Line Items]
2020	4,063
2021	3,220
2022	2,391
2023	2,154
2024	2,048
Thereafter	9,938
Total	23,814
Leased sites
Franchise Arrangements [Line Items]
2020	59,424
2021	54,161
2022	48,699
2023	41,998
2024	35,618
Thereafter	173,639
Total	$ 413,539

Franchise Arrangements [Line Items]

No definition available.

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- Definition

Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981

+ Details

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- Definition

Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in fourth year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in next fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor after fifth fiscal year following latest statement of financial position date for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Definition

Amount of lease payments to be received by lessor in second fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

+ References

+ Details

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- Details

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