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Stock Incentive Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Feb. 25, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Executive Officers |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total shareholder return |  |  |  | 50.00% |
Hotel market share |  |  |  | 50.00% |
Restricted Stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  |  |  | 3 years |
Awards expected to vest in 2020 (in shares) |  | 8,202 |  | 8,202 |
Awards expected to vest in 2021 (in shares) |  | 247,019 |  | 247,019 |
Awards expected to vest in 2022 (in shares) |  | 141,836 |  | 141,836 |
Awards expected to vest in 2023 (in shares) |  | 176,005 |  | 176,005 |
Unrecognized compensation cost |  | $ 4.0 |  | $ 4.0 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 25 months |
Compensation expense |  | $ 0.7 | $ 0.6 | $ 2.0 | $ 1.9
Number of shares, granted (in shares) |  |  |  | 343,410 |
Units vested (in shares) |  |  |  | 229,664 |
Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  |  |  | 3 years |
Awards expected to vest in 2021 (in shares) |  | 290,927 |  | 290,927 |
Awards expected to vest in 2022 (in shares) |  | 269,224 |  | 269,224 |
Awards expected to vest in 2023 (in shares) |  | 352,035 |  | 352,035 |
Unrecognized compensation cost |  | $ 4.1 |  | $ 4.1 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 23 months |
Compensation expense |  | $ 0.7 | 0.5 | $ 2.0 | 1.8
Performance period (in 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% |
Number of shares, granted (in shares) |  |  |  | 352,035 |
Fair value at grant date (in dollars per share) | $ 8.52 |  |  |  |
Volatility | 21.40% |  |  |  |
Risk-free rate | 1.16% |  |  |  |
Fair value at grant date based on hotel market share (in dollars per share) | $ 9.58 |  |  |  |
Units vested (in shares) |  |  |  | 245,937 |
Performance Stock Units | Executive Officers |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares, granted (in shares) | 352,035 |  |  |  |
Long-Term Incentive Plan Unit |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Awards expected to vest in 2021 (in shares) |  | 108,421 |  | 108,421 |
Awards expected to vest in 2022 (in shares) |  | 108,422 |  | 108,422 |
Awards expected to vest in 2023 (in shares) |  | 26,966 |  | 26,966 |
Unrecognized compensation cost |  | $ 1.9 |  | $ 1.9 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 21 months |
Compensation expense |  | $ 0.3 | $ 0.2 | $ 0.8 | $ 0.5
Number of shares, granted (in shares) |  |  |  | 80,898 |
Units outstanding (in shares) |  | 325,264 |  | 325,264 |
Units vested (in shares) |  |  |  | 81,455 |
Long-Term Incentive Plan Unit | Executive Officers |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares, granted (in shares) | 80,898 |  |  |  |
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) |  | 3,053,153 |  | 3,053,153 |
Maximum | Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of total stockholder return for payout of shares |  |  |  | 30.00% |
Minimum | Performance Stock Units | Executive Officers |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of total stockholder return for payout of shares |  |  |  | 75.00% |

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- Definition 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). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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