Other Assets - Components Of Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Other Assets [Abstract]
Land and buildings		$ 29,643	$ 19,284
Capitalized franchise sales commissions		51,929	46,050
Other assets		2,828	2,381
Total		$ 84,400	$ 67,715
CS 433 Mason LLC \| Variable Interest Entity, Not Primary Beneficiary
Investment [Line Items]
Consideration transferred	$ 3,200
Equity method investment, ownership percentage		100.00%	90.00%

Capitalized Franchise Sales Commissions

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- Definition

Other Assets, Land and Buildings

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer.

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Amount of noncurrent assets classified as other.

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