Stockholders' Equity	9 Months Ended
Sep. 30, 2019
Equity [Abstract]
Stockholders' Equity	13. STOCKHOLDERS’ EQUITY As of September 30, 2019, 94,012,743 shares of common stock were issued in the accompanying unaudited condensed consolidated balance sheet, which excludes 503,598 unvested shares of common stock and 2,193,303 unvested restricted stock units held by certain participants in the Company’s equity compensation plans (see Note 12–Equity-Based Compensation) and includes 15,790,463 shares of treasury stock held by the Company. Share Repurchase Program The Board had previously authorized a share repurchase program of up to $250.0 million of the Company’s common stock (the “Share Repurchase Program”). Under the Share Repurchase Program, the Company is authorized to repurchase shares through open market purchases, privately-negotiated transactions or otherwise in accordance with applicable federal securities laws, including through Rule 10b5-1 trading plans and under Rule 10b-18 of the Exchange Act. Through December 31, 2018, the Company had repurchased an aggregate of $158.0 million under the Share Repurchase Program. On February 22, 2019, the Board approved a replenishment to the Share Repurchase Program bringing the total amount available for future purchases back up to $250.0 million. During the nine months ended September 30, 2019, the Company completed a share repurchase of 5,615,874 shares (see discussion relating to the SEAS Repurchase in Note 10–Related Party Transactions for further details). On August 2, 2019, the Board approved a replenishment to the Share Repurchase Program of $150.0 million, bringing the total amount authorized for future share repurchases back up to $250.0 million. There were no share repurchases under the Share Repurchase Program during the three months ended September 30, 2019 or the three and nine months ended September 30, 2018. The Share Repurchase Program has no time limit and may be suspended or discontinued completely at any time. The number of shares to be purchased and the timing of purchases will be based on the Company’s trading windows and available liquidity, general business and market conditions, and other factors, including legal requirements, debt covenant restrictions and alternative investment opportunities.

Stockholders' Equity

9 Months Ended

Sep. 30, 2019

13. STOCKHOLDERS’ EQUITY

As of September 30, 2019, 94,012,743 shares of common stock were issued in the accompanying unaudited condensed consolidated balance sheet, which excludes 503,598 unvested shares of common stock and 2,193,303 unvested restricted stock units held by certain participants in the Company’s equity compensation plans (see Note 12–Equity-Based Compensation) and includes 15,790,463 shares of treasury stock held by the Company.

Share Repurchase Program

The Board had previously authorized a share repurchase program of up to $250.0 million of the Company’s common stock (the “Share Repurchase Program”). Under the Share Repurchase Program, the Company is authorized to repurchase shares through open market purchases, privately-negotiated transactions or otherwise in accordance with applicable federal securities laws, including through Rule 10b5-1 trading plans and under Rule 10b-18 of the Exchange Act. Through December 31, 2018, the Company had repurchased an aggregate of $158.0 million under the Share Repurchase Program. On February 22, 2019, the Board approved a replenishment to the Share Repurchase Program bringing the total amount available for future purchases back up to $250.0 million.

During the nine months ended September 30, 2019, the Company completed a share repurchase of 5,615,874 shares (see discussion relating to the SEAS Repurchase in Note 10–Related Party Transactions for further details). On August 2, 2019, the Board approved a replenishment to the Share Repurchase Program of $150.0 million, bringing the total amount authorized for future share repurchases back up to $250.0 million. There were no share repurchases under the Share Repurchase Program during the three months ended September 30, 2019 or the three and nine months ended September 30, 2018.

The Share Repurchase Program has no time limit and may be suspended or discontinued completely at any time. The number of shares to be purchased and the timing of purchases will be based on the Company’s trading windows and available liquidity, general business and market conditions, and other factors, including legal requirements, debt covenant restrictions and alternative investment opportunities.