Allocated Share-based Compensation Expense, Forfeitures

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- Definition

Maximum Possible Payout to Executive Officer as a Percentage of the Target Award

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- Definition

Percentage Based on Improvement in Market Share of Hotels

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Percentage Of Payout Based On Improving Market Share

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- Definition

Percentage of Total Stockholder Return For Payout of Shares

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Number of Shares Issued or Committed to Issue

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Restricted Stock Awards Expected to Vest One Year from Balance Sheet

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Restricted Stock Awards Expected to Vest Three Years from Balance Sheet Date

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award Restricted Stock Awards Expected to Vest Two Years from Balance Sheet Date

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- Definition

Share-based Compensation Arrangement by Share-based Payment Arrangement, Performance Period

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

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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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Percentage of vesting of share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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Stock Incentive Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Feb. 17, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to compensation awards, period for recognition (in months)	22 months
Issued In 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment, vesting period (years)	3 years
Expected to vest one year from balance sheet date (in shares)	287,148
Expected to vest two years from balance sheet date (in shares)	227,699
Expected to vest three years from balance sheet date (in shares)	116,115
Unrecognized compensation cost	$ 4.1
Compensation expense (in dollars)	$ 3.1	$ 2.8	$ 2.8
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment, vesting period (years)	3 years
Expected to vest one year from balance sheet date (in shares)	216,186
Expected to vest two years from balance sheet date (in shares)	294,545
Expected to vest three years from balance sheet date (in shares)	275,066
Unrecognized compensation cost	$ 3.1
Unrecognized compensation expense related to compensation awards, period for recognition (in months)	22 months
Compensation expense (in dollars)	$ 2.5	$ 2.0	$ 2.3
Performance period	3 years
Maximum possible payout to executive officer as a percentage of the target award (as a percent)	150.00%
Percentage of total stockholder return for payout of shares (as a percent)	30.00%
Percentage based on improvement in market share of hotels (as a percent)	25.00%
Stock of common stock earned for the PSUs vested in 2018 (as a percent)	51.80%	89.50%
Compensation expense, forfeitures		$ 0.4
Performance Stock Units \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of total stockholder return for payout of shares (as a percent)	75.00%
Performance Stock Units \| Issued In 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based payment, vesting period (years)	3 years
Percentage of payout based on improving market share	50.00%
Performance Stock Units \| Issued In 2017 \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of total stockholder return for payout of shares (as a percent)	50.00%
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option and Incentive plan, shares authorized				6,082,664
2004 Stock Option and Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued or committed to issue	447,089