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Subsequent Events Subsequent Events - (Notes)
12 Months Ended
Dec. 31, 2017
Subsequent Events [Abstract]  
Subsequent Events
Subsequent Events
On February 14, 2018, the Company's Board of Directors declared a cash dividend of $0.045 per share. The dividend is payable March 16, 2018 to all shareholders of record as of the close of business on March 2, 2018.