Income Taxes (Schedule Of Income Tax (Expense) Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Current Federal	$ (7)	$ 4,309	$ (5,012)
Current State		22	3,440
Total current	(7)	4,331	(1,572)
Deferred Federal
Deferred State
Total deferred
Total income tax (expense) benefit	$ (7)	$ 4,331	$ (1,572)