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Stock Incentive Plans - Narrative (Details) - USD ($) |  | 3 Months Ended | 6 Months Ended
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Mar. 01, 2019 | Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Performance period (in years) |  |  |  | 3 years |
Percentage of target award of maximum possible payout to executives |  |  |  | 150.00% |
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 2019 (in shares) |  | 9,542 |  | 9,542 |
Awards expected to vest in 2020 (in shares) |  | 238,531 |  | 238,531 |
Awards expected to vest in 2021 (in shares) |  | 139,818 |  | 139,818 |
Award expected to vest in 2022 (in shares) |  | 23,788 |  | 23,788 |
Unrecognized compensation cost |  | $ 3,400,000 |  | $ 3,400,000 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 20 months |
Compensation expense |  | $ 600,000 | $ 800,000 | $ 1,400,000 | $ 2,100,000
Number of shares, granted (in shares) |  |  |  | 73,240 |
Weighted-average grant date fair value, shares granted (in dollars per share) |  |  |  | $ 10.65 |
Vested (in shares) |  |  |  | 300,575 |
Restricted Stock | Chief Financial Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Accelerated compensation cost |  |  |  |  | 600,000
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 2020 (in shares) |  | 237,092 |  | 237,092 |
Awards expected to vest in 2021 (in shares) |  | 310,441 |  | 310,441 |
Award expected to vest in 2022 (in shares) |  | 299,434 |  | 299,434 |
Unrecognized compensation cost |  | $ 4,800,000 |  | $ 4,800,000 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 25 months |
Compensation expense |  | 700,000 | $ 600,000 | $ 1,300,000 | 1,700,000
Percentage of total stockholder return for payout of shares |  |  |  | 30.00% |
Number of shares, granted (in shares) |  |  |  | 296,050 |
Fair value at grant date (in dollars per share) | $ 9.68 |  |  |  |
Volatility | 24.30% |  |  |  |
Risk-free rate | 2.54% |  |  |  |
Fair value at grant date based on hotel market share (in dollars per share) | $ 10.65 |  |  |  |
Weighted-average grant date fair value, shares granted (in dollars per share) |  |  |  | $ 10.14 |
Vested (in shares) |  |  |  | 251,375 |
Performance Stock Units | Chief Financial Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Accelerated compensation cost |  |  |  | $ 600,000 |
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% |
Number of shares, granted (in shares) | 296,050 |  |  |  |
Long-Term Incentive Plan Unit |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost |  | 2,700,000 |  | $ 2,700,000 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  | 32 months |
Compensation expense |  | $ 200,000 |  | $ 300,000 | $ 0
Number of shares, granted (in shares) |  |  |  | 281,925 |
Weighted-average grant date fair value, shares granted (in dollars per share) |  |  |  | $ 10.65 |
Vested (in shares) |  |  |  | 0 |
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) |  | 1,262,120 |  | 1,262,120 |
Issued In 2016 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Performance period (in years) |  |  |  | 3 years |
Issued In 2016 | Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  |  |  | 3 years |
Percentage of payout based on total stockholder return |  |  |  | 75.00% |
Percentage of payout based on improving market share |  |  |  | 25.00% |
Issued In 2017 | Performance Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period (in years) |  |  |  | 3 years |
Percentage of payout based on improving market share |  |  |  | 50.00% |
Issued In 2017 | 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 |  |  |  | 50.00% |

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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=116856206&loc=d3e5070-113901 + Details
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