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Significant Non-Cash Investing Activities
9 Months Ended
Sep. 30, 2018
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]  
Significant Non-Cash Investing and Financing Activities
SIGNIFICANT NON-CASH INVESTING AND FINANCING ACTIVITIES:
As of September 30, 2018 and 2017, the Company had outstanding accounts receivable from outside parties for the funding of capital expenditures of $14.6 million and $12.2 million, respectively. As of September 30, 2018 and 2017, the Company also had $16.1 million and $12.3 million, respectively, of purchases of property and equipment that were not paid and, accordingly, were accrued in accounts payable in the normal course of business.