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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events. On April 30, 2018, the Board of Directors declared a quarterly dividend payable to stockholders of record as of May 16, 2018, of the Company's Common Stock, and a dividend equivalent payable to holders of RSUs as of May 16, 2018, of $.08 per share and per unit, payable on June 1, 2018.