Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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Goodwill Additional Details (Details)	12 Months Ended
Goodwill Additional Details (Details)	Dec. 31, 2018 USD ($) reporting_unit	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Feb. 01, 2018 USD ($)
Goodwill [Line Items]
Acquisition	$ 93,384,000	$ 0
Number of reporting units \| reporting_unit	2
Impairment of goodwill	$ 4,289,000	0	$ 0
Goodwill	168,996,000	80,757,000	78,905,000
Hotel Franchising
Goodwill [Line Items]
Acquisition	93,384,000	0
Impairment of goodwill	0	0
Goodwill	$ 159,197,000	$ 65,813,000	$ 65,813,000
WoodSpring
Goodwill [Line Items]
Business acquisition, percentage of voting interests acquired				100.00%
Goodwill				$ 93,384,000