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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 31, 2018, the Board of Directors declared a quarterly dividend payable to stockholders of record as of August 16, 2018, of the Company's Common Stock, and a dividend equivalent payable to holders of certain RSUs as of August 16, 2018, of $.08 per share and per unit, payable on August 31, 2018.