Stock-Based Compensation Stock-Based Compensation - Additional Information (Details) - shares		Jun. 30, 2018		Dec. 31, 2017
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	[2]	1,600,000	[1],[3]	0

[1] (2) Represents weighted average exercise price for stock options, weighted average grant date fair value for RSUs, and the price of CEC common stock as of the balance sheet date for PSUs.

[2] (5) No PSUs have vested during the six months ended June 30, 2018.

[3] The conditions that were considered prohibited forms of continuing involvement related to our sale of the Golf Course Properties (see Note 7) are no longer considered continuing involvement under the new revenue recognition standard. As of result of adopting the new standard on a full retrospective basis, we are now reflecting this transaction as a completed sale in the period in which it occurred.