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Significant Non-Cash Investing Activities
6 Months Ended
Jun. 30, 2017
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 June 30, 2017 and 2016, the Company had outstanding receivables from outside parties for the funding of capital expenditures of $10.0 million and $12.5 million, respectively. At June 30, 2017 and 2016, the Company also had $10.5 million and $14.0 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.