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Contingencies	6 Months Ended
Contingencies	Jun. 30, 2018
Contingencies [Abstract]
Contingencies	5. Contingencies In the ordinary conduct of the Company's business, the Company is subject to lawsuits, arbitrations and administrative proceedings from time to time. The Company believes that the outcome of any existing or known threatened proceedings, even if determined adversely, should not have a material adverse effect on the Company's business, financial condition, liquidity or results of operations.