Franchise arrangements (Schedule of Future Minimum Rent Payments Under Franchised Agreements) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Franchise Arrangements [Line Items]
2019	$ 66,543
2020	62,512
2021	56,761
2022	49,589
2023	40,946
Thereafter	171,304
Total	447,655
Owned sites
Franchise Arrangements [Line Items]
2019	5,965
2020	5,503
2021	4,952
2022	4,254
2023	3,552
Thereafter	15,356
Total	39,582
Leased sites
Franchise Arrangements [Line Items]
2019	60,578
2020	57,009
2021	51,809
2022	45,335
2023	37,394
Thereafter	155,948
Total	$ 408,073

Franchise Arrangements [Line Items]

No definition available.

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- Definition

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164653&loc=d3e41551-112718

+ Details

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- Definition

Future rental payments receivable within one year of the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fifth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the fourth year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the third year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future rental payments receivable within the second year from the balance sheet date under an operating lease.

+ References

+ Details

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- Definition

Future minimum lease payments receivable under operating leases for periods greater than five years following the balance sheet date.

+ References

+ Details

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- Details

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- Details

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