Condensed Consolidating Financial Information (Schedule Of Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net cash provided by operating activities - continuing operations	$ 367,474	$ 253,071	$ 155,511
Net cash used in investing activities - continuing operations	(509,885)	(465,151)	(250,068)
Net cash provided by financing activities - continuing operations	120,326	237,778	116,826
Net cash provided by (used in) discontinued operations	126,910	(1,196)	1,715
Net increase (decrease) in cash and cash equivalents	104,825	24,502	23,984
Cash and cash equivalents, beginning of year	52,614	28,112	4,128
Cash and cash equivalents, end of year	157,439	52,614	28,112
Parent Company [Member]
Net cash provided by operating activities - continuing operations	(55,888)	75,546	56,563
Net cash used in investing activities - continuing operations	(86,322)	(280,564)	(194,689)
Net cash provided by financing activities - continuing operations	120,326	237,778	155,842
Net cash provided by (used in) discontinued operations	127,429	0	0
Net increase (decrease) in cash and cash equivalents	105,545	32,760	17,716
Cash and cash equivalents, beginning of year	51,894	19,134	1,418
Cash and cash equivalents, end of year	157,439	51,894	19,134
Combined Guarantor Subsidiaries [Member]
Net cash provided by operating activities - continuing operations	423,366	177,525	98,948
Net cash used in investing activities - continuing operations	(513,710)	(493,145)	(356,168)
Net cash provided by financing activities - continuing operations	90,143	308,558	261,773
Net cash provided by (used in) discontinued operations	0	0	0
Net increase (decrease) in cash and cash equivalents	(201)	(7,062)	4,553
Cash and cash equivalents, beginning of year	201	7,263	2,710
Cash and cash equivalents, end of year	0	201	7,263
Combined Non-Guarantor Subsidiaries [Member]
Net cash provided by operating activities - continuing operations	(4)	0	0
Net cash used in investing activities - continuing operations	(2,057)	0	0
Net cash provided by financing activities - continuing operations	2,061	0	0
Net cash provided by (used in) discontinued operations	(519)	(1,196)	1,715
Net increase (decrease) in cash and cash equivalents	(519)	(1,196)	1,715
Cash and cash equivalents, beginning of year	519	1,715	0
Cash and cash equivalents, end of year	0	519	1,715
Eliminations [Member]
Net cash provided by operating activities - continuing operations	0	0	0
Net cash used in investing activities - continuing operations	92,204	308,558	300,789
Net cash provided by financing activities - continuing operations	(92,204)	(308,558)	(300,789)
Net cash provided by (used in) discontinued operations	0	0	0
Net increase (decrease) in cash and cash equivalents	0	0	0
Cash and cash equivalents, beginning of year	0	0	0
Cash and cash equivalents, end of year	$ 0	$ 0	$ 0