Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	$ 165,652	$ 195,646
Net cash used in investing activities - continuing operations	(382,567)	(465,039)
Net cash provided by (used in) financing activities - continuing operations	210,238	126,158
Net cash provided by (used in) discontinued operations	(2,157)	(5,582)
Net Decrease in Cash and Cash Equivalents	(8,834)	(148,817)
Cash and Cash Equivalents, Beginning of Period	10,838	157,439
Cash and Cash Equivalents, End of Period	2,004	8,622
Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	0	0
Net cash used in investing activities - continuing operations	297,646	167,235
Net cash provided by (used in) financing activities - continuing operations	(297,646)	(167,235)
Net cash provided by (used in) discontinued operations	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents, Beginning of Period	0	0
Cash and Cash Equivalents, End of Period	0	0
Parent Company [Member] \| Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	(29,397)	(122,961)
Net cash used in investing activities - continuing operations	(337,518)	(146,432)
Net cash provided by (used in) financing activities - continuing operations	360,238	126,158
Net cash provided by (used in) discontinued operations	(2,157)	(5,582)
Net Decrease in Cash and Cash Equivalents	(8,834)	(148,817)
Cash and Cash Equivalents, Beginning of Period	10,838	157,439
Cash and Cash Equivalents, End of Period	2,004	8,622
Combined Guarantor Subsidiaries [Member] \| Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	195,049	318,607
Net cash used in investing activities - continuing operations	(342,695)	(464,288)
Net cash provided by (used in) financing activities - continuing operations	147,646	145,681
Net cash provided by (used in) discontinued operations	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents, Beginning of Period	0	0
Cash and Cash Equivalents, End of Period	0	0
Combined Non-Guarantor Subsidiaries [Member] \| Reportable Legal Entities [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided by (used in) operating activities - continuing operations	0	0
Net cash used in investing activities - continuing operations	0	(21,554)
Net cash provided by (used in) financing activities - continuing operations	0	21,554
Net cash provided by (used in) discontinued operations	0	0
Net Decrease in Cash and Cash Equivalents	0	0
Cash and Cash Equivalents, Beginning of Period	0	0
Cash and Cash Equivalents, End of Period	$ 0	$ 0

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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