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Commitments and Contingences	9 Months Ended
Commitments and Contingences	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingences	10. Commitments and Contingences Litigation The Company is not a party to any litigation and does not have contingency reserves established for any litigation liabilities as of September 30, 2018 and December 31, 2017.