Related-Party Transactions	12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]
Related-Party Transactions	17. RELATED-PARTY TRANSACTIONS ZHG Agreements On March 24, 2017, the Company entered into the ZHG Agreements with Zhonghong Holding, an affiliate of ZHG Group. In exchange for providing services under the ZHG Agreements, the Company is expected to receive fees as well as a travel stipend per year through 2019. The Company recognizes revenue under the ZHG Agreements on a straight line basis over the contractual term of the agreements. Revenue recognized in the year ended December 31, 2017 was approximately $3,900 related to these agreements. See further discussion regarding the Sale in Note 1–Description of the Business and Note 20–Stockholders’ Equity. In connection with the Sale discussed in Note 1–Description of the Business, which closed on May 8, 2017, Sellers reimbursed the Company for approximately $4,000 of related costs and expenses incurred by the Company during the year ended December 31, 2017. Hill Path Capital LP Agreements On November 5, 2017, the Company and Hill Path Capital LP (“Hill Path”) entered into a Cooperation Agreement (the “Cooperation Agreement”) and certain related agreements. Under the terms of the Cooperation Agreement, the Company paid Hill Path $500 during the fourth quarter of 2017 to reimburse for fees and expenses incurred in connection with the negotiation and execution of the Cooperation Agreement. Pursuant to the Cooperation Agreement, on November 5, 2017, the Board appointed a designee from Hill Path (the “Designee”) to the Board and the recently created Revenue Committee, immediately following the execution of the Cooperation Agreement. On November 5, 2017, the Company also entered into an Undertaking Agreement (the “Undertaking Agreement”) which permits the Designee to provide information to certain personnel of Hill Path and certain of Hill Path’s advisors as described therein. The undertakings of Hill Path and the Designee pursuant to the Undertaking Agreement are effective for 12 months following the date on which there is no director serving on the Board who is designated by Hill Path. The Company also entered into a side letter with Hill Path that provides if it obtains any requisite Board approval or the consent of SunWise (UK) Co. LTD (“ZHG”), the Company will execute and deliver to Hill Path a form of registration rights agreement (the “Registration Rights Agreement”). The Registration Rights Agreement will provide that following the date that is one day after the expiration of the Company’s advance notice period for the nomination of directors at the 2018 Annual Meeting and provided that Hill Path has not submitted any nominations for the election of directors in accordance with the Company’s advance notice period as set forth in the Company’s Second Amended and Restated Bylaws, the Hill Path entities will have limited shelf registration rights with respect to their common stock (including certain demand underwritten offering rights and piggyback registration rights). The Registration Rights Agreement also will require the Company to pay certain expenses relating to such registration and indemnify the Hill Path entities against certain liabilities under the Securities Act of 1933, as amended. Debt and Interest Payments As of December 31, 2016, approximately $25,000 aggregate principal amount of Term B-2 Loans were owned by affiliates of Blackstone. The Company makes voluntary and mandatory principal repayments as well as periodic principal and interest payments on such debt in accordance with its terms from time to time. There were no debt amounts owned by affiliates of the Company as of December 31, 2017. See Note 12–Long-Term Debt for further discussion.

17. RELATED-PARTY TRANSACTIONS

ZHG Agreements

On March 24, 2017, the Company entered into the ZHG Agreements with Zhonghong Holding, an affiliate of ZHG Group. In exchange for providing services under the ZHG Agreements, the Company is expected to receive fees as well as a travel stipend per year through 2019. The Company recognizes revenue under the ZHG Agreements on a straight line basis over the contractual term of the agreements. Revenue recognized in the year ended December 31, 2017 was approximately $3,900 related to these agreements. See further discussion regarding the Sale in Note 1–Description of the Business and Note 20–Stockholders’ Equity.

In connection with the Sale discussed in Note 1–Description of the Business, which closed on May 8, 2017, Sellers reimbursed the Company for approximately $4,000 of related costs and expenses incurred by the Company during the year ended December 31, 2017.

Hill Path Capital LP Agreements

On November 5, 2017, the Company and Hill Path Capital LP (“Hill Path”) entered into a Cooperation Agreement (the “Cooperation Agreement”) and certain related agreements. Under the terms of the Cooperation Agreement, the Company paid Hill Path $500 during the fourth quarter of 2017 to reimburse for fees and expenses incurred in connection with the negotiation and execution of the Cooperation Agreement. Pursuant to the Cooperation Agreement, on November 5, 2017, the Board appointed a designee from Hill Path (the “Designee”) to the Board and the recently created Revenue Committee, immediately following the execution of the Cooperation Agreement.

On November 5, 2017, the Company also entered into an Undertaking Agreement (the “Undertaking Agreement”) which permits the Designee to provide information to certain personnel of Hill Path and certain of Hill Path’s advisors as described therein. The undertakings of Hill Path and the Designee pursuant to the Undertaking Agreement are effective for 12 months following the date on which there is no director serving on the Board who is designated by Hill Path. The Company also entered into a side letter with Hill Path that provides if it obtains any requisite Board approval or the consent of SunWise (UK) Co. LTD (“ZHG”), the Company will execute and deliver to Hill Path a form of registration rights agreement (the “Registration Rights Agreement”). The Registration Rights Agreement will provide that following the date that is one day after the expiration of the Company’s advance notice period for the nomination of directors at the 2018 Annual Meeting and provided that Hill Path has not submitted any nominations for the election of directors in accordance with the Company’s advance notice period as set forth in the Company’s Second Amended and Restated Bylaws, the Hill Path entities will have limited shelf registration rights with respect to their common stock (including certain demand underwritten offering rights and piggyback registration rights). The Registration Rights Agreement also will require the Company to pay certain expenses relating to such registration and indemnify the Hill Path entities against certain liabilities under the Securities Act of 1933, as amended.

Debt and Interest Payments

As of December 31, 2016, approximately $25,000 aggregate principal amount of Term B-2 Loans were owned by affiliates of Blackstone. The Company makes voluntary and mandatory principal repayments as well as periodic principal and interest payments on such debt in accordance with its terms from time to time. There were no debt amounts owned by affiliates of the Company as of December 31, 2017. See Note 12–Long-Term Debt for further discussion.