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Subsequent Events (Notes)
12 Months Ended
Dec. 31, 2019
Subsequent Events [Abstract]  
Subsequent Events SUBSEQUENT EVENTSIn February 2020, the Company's Board of Directors approved a repurchase program of up to $100,000 of the Company's convertible notes and/or shares of common stock. Under this program, the Company may repurchase convertible notes or shares from time to time in open market transactions, privately negotiated transactions or by other means. The timing and amount of repurchase transactions under each program are determined by the Company's management based on its evaluation of market conditions, share price, bond price, legal requirements and other factors.