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Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2017
Related Party Transaction, Due from (to) Related Party [Abstract]
Related Party Transactions	Related Party Transactions A director is a member of a law firm which was retained by the Company. During the years ended December 31, 2017, 2016 and 2015, fees paid by the Company to such firm did not exceed $120,000 in any period. Additionally, such fees did not exceed, in any period, 5% of such firm’s revenues or the Company’s revenues.