Significant Non-Cash Investing Activities	3 Months Ended
Significant Non-Cash Investing Activities	Mar. 31, 2013
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Cash Flow, Supplemental Disclosures	SIGNIFICANT NON-CASH INVESTING ACTIVITIES: As of March 31, 2013 and 2012, the Company had outstanding receivables from outside parties for the funding of capital expenditures of $20.9 million and $17.8 million, respectively. At March 31, 2013 and 2012, the Company also had approximately $12.2 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.

The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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