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

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Maximum Possible Units Earned, Percentage of the Target Award if Total Stockholder Return Is Negative

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Percentage of Total Stockholder Return For Payout of Shares

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Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Grants To Date

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Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Vested To Date

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Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Fair Value at Grant Date

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Share-Based Compensation Arrangement By Share-Based Payment Award, Maximum Possible Payout To Executive Officer As Percentage Of The Target Award

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

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Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Issued Based on Hotel Market Share

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Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Shares Issued Based on Total Shareholder Return

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Share-Based Compensation Arrangement By Share-Based Payment Award, Percentage Of Total Stockholder Return For Payout Of Shares

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Share Based Compensation Arrangement by Share Based Payment Award Restricted Stock Awards Expected to Vest After Year Four From Balance Sheet Date

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

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

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Share Based Compensation Arrangement by Share Based Payment Award Restricted Stock Awards Expected to Vest Remainder of Year From Balance Sheet Date

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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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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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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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 shares authorized for issuance under share-based payment arrangement.

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Price of a single share of a number of saleable stocks of a company.

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Percentage of vesting of award under share-based payment arrangement.

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Stock Incentive Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended
	Mar. 02, 2021	Feb. 25, 2021	Mar. 31, 2021	Mar. 31, 2021	Mar. 31, 2020
Unvested restricted common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Number of shares, granted (in shares)				1,114,894
Awards expected to vest in 2021 (in shares)			8,202	8,202
Awards expected to vest in 2022 (in shares)			424,416	424,416
Awards expected to vest in 2023 (in shares)			458,585	458,585
Awards expected to vest in 2024 (in shares)			285,103	285,103
Awards expected to vest in 2025 (in shares)			129,788	129,788
Awards expected to vest in 2026 (in shares)			129,785	129,785
Unrecognized compensation cost			$ 13.0	$ 13.0
Unrecognized compensation expense related to compensation awards, period for recognition (in months)				44 months
Compensation expense				$ 0.8	$ 0.7
Shares related to unvested PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)				3 years
Number of shares, granted (in shares)				347,981
Vesting percentage				100.00%
Awards expected to vest in 2021 (in shares)			269,224	269,224
Awards expected to vest in 2022 (in shares)			352,035	352,035
Awards expected to vest in 2023 (in shares)			347,981	347,981
Unrecognized compensation cost			$ 6.0	$ 6.0
Unrecognized compensation expense related to compensation awards, period for recognition (in months)				28 months
Compensation expense				$ 0.7	0.7
Performance period (in years)	2 years			3 years
Percentage of target award of maximum possible payout to executives				150.00%
Number of units earned if total stockholder return is negative				100.00%
Fair value at grant date (in dollars per share)		$ 9.28
Volatility		68.80%
Risk-free rate		0.26%
Fair value at grant date based on hotel market share (in dollars per share)		$ 9.40
Shares related to unvested PSUs \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares, granted (in shares)		347,981
Total shareholder return				50.00%
Hotel market share				50.00%
Percentage of total stockholder return for payout of shares				30.00%
Maximum possible payout to executive officer as percentage of the target award				150.00%
Long-Term Incentive Plan Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards expected to vest in 2021 (in shares)			108,422	108,422
Awards expected to vest in 2022 (in shares)			26,966	26,966
Unrecognized compensation cost			$ 1.3	$ 1.3
Unrecognized compensation expense related to compensation awards, period for recognition (in months)				19 months
Compensation expense				$ 0.3	$ 0.2
Units granted (in shares)			325,264	325,264
Units vested (in shares)			189,876	189,876
Maximum \| Shares related to unvested PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of total stockholder return for payout of shares				30.00%
Minimum \| Shares related to unvested PSUs \| Executive Officers
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of total stockholder return for payout of shares				75.00%
Percentage of total stockholder return for payout of shares				75.00%
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option and incentive plan, shares authorized (up to) (in shares)			6,082,664	6,082,664
Number of shares issued or committed to issue (in shares)			4,396,976	4,396,976
Special Retention Awards \| Unvested restricted common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			5 years
Number of shares, granted (in shares)				691,490
Special Retention Awards \| Unvested restricted common stock \| Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			0.00%
Special Retention Awards \| Unvested restricted common stock \| Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Special Retention Awards \| Unvested restricted common stock \| Tranche Three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
Special Retention Awards \| Unvested restricted common stock \| Tranche Four
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			50.00%