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Stock Incentive Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Apr. 02, 2018 | Mar. 02, 2018 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
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) |  |  | 310,117 |  | 310,117 |
Awards expected to vest in 2020 (in shares) |  |  | 215,368 |  | 215,368 |
Awards expected to vest in 2021 (in shares) |  |  | 116,359 |  | 116,359 |
Unrecognized compensation cost |  |  | $ 5.5 |  | $ 5.5 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  |  | 26 months |
Compensation expense |  |  | $ 0.8 | $ 0.8 | $ 2.1 | $ 1.5
Number of shares, granted (in shares) |  |  |  |  | 349,091 |
Restricted Stock | Chief Financial Officer |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Accelerated compensation cost |  |  |  |  | $ 0.6 |
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 2019 (in shares) |  |  | 301,189 |  | 301,189 |
Awards expected to vest in 2020 (in shares) |  |  | 281,270 |  | 281,270 |
Awards expected to vest in 2021 (in shares) |  |  | 296,195 |  | 296,195 |
Unrecognized compensation cost |  |  | $ 4.3 |  | $ 4.3 |
Unrecognized compensation expense related to compensation awards, period for recognition (in months) |  |  |  |  | 26 months |
Compensation expense |  |  | $ 0.6 |  | $ 1.7 | $ 1.2
Percentage of total stockholder return for payout of shares |  |  |  |  | 30.00% |
Number of shares, granted (in shares) |  |  |  |  | 293,111 |
Fair value at grant date (in dollars per share) | $ 9.00 | $ 9.52 |  |  |  |
Volatility | 26.90% | 26.90% |  |  |  |
Risk-free rate | 2.37% | 2.40% |  |  |  |
Fair value at grant date based on hotel market share (in dollars per share) | $ 10.32 | $ 10.18 |  |  |  |
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) |  | 264,509 |  |  |  |
Performance Stock Units | Chief Financial Officer |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Accelerated compensation cost |  |  |  |  | $ 0.6 |
Number of shares, granted (in shares) | 28,602 |  |  |  |  |
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) |  |  | 846,517 |  | 846,517 |
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 improving market share |  |  |  |  | 25.00% |
Issued In 2016 | 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% |
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 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=109197908&loc=d3e5070-113901 + Details
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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=109197908&loc=d3e5070-113901 + Details
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- Definition 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. + 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 (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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