Condensed Consolidated Statements of Other Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income (loss)	$ (8,998)	$ 3,314	$ 2,174	$ 38,462
Other comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(1,671)		(1,671)	94
Amortized gain on derivative financial instruments		385		921
Total other comprehensive income (loss)	(1,671)	385	(1,671)	1,015
Comprehensive income (loss)	$ (10,669)	$ 3,699	$ 503	$ 39,477