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Earnings Per Share	6 Months Ended
Earnings Per Share	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share: The computation of diluted net loss per share does not include stock options and performance shares of 995,154 and 923,306 for the three and six months ended June 30, 2018 and 2017, respectively, because the effect of their inclusion would be anti-dilutive based on their respective exercise prices.