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Litigation	12 Months Ended
Litigation	Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Litigation	17. LITIGATION The Company is subject to various outstanding claims and other legal proceedings that may arise in the ordinary course of business. In the opinion of management, any liability of the Company that may arise out of or with respect to these matters will not materially adversely affect the financial position, results of operations or cash flows of the Company.