Condensed Consolidating Financial Information (Details 3) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	$ 24,391	$ 59,584
Net cash used in investing activities	(32,653)	(71,947)
Net cash provided by (used in) financing activities	(5,660)	23,165
Net increase (decrease) in cash	(13,922)	10,802
Guarantor Parent Company
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	969	(3,242)
Net increase (decrease) in cash	969	(3,242)
Issuer Subsidiary
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	714	(24,624)
Net cash provided by (used in) financing activities	(714)	24,624
Guarantor Subsidiaries
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	26,121	67,004
Net cash used in investing activities	(32,084)	(62,248)
Net cash provided by (used in) financing activities	(122)
Net increase (decrease) in cash	(6,085)	4,756
Non-Guarantor Subsidiaries
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	(3,413)	20,446
Net cash used in investing activities	(569)	(9,699)
Net cash provided by (used in) financing activities	(4,824)	(1,459)
Net increase (decrease) in cash	$ (8,806)	$ 9,288