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Income Taxes (Schedule of Components of Income Tax) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Abstract]                      
Current provision (benefit), Federal                 $ 85 $ (5,782) $ 3
Current provision (benefit), State                 (6) (440) 280
Deferred (benefit) provision, Federal                 (3,205) 13,143 9,897
Deferred (benefit) provision, State                 622 (587) 176
(Benefit) provision for income taxes $ (477) $ (652) $ (841) $ (534) $ 54 $ 1,333 $ 2,222 $ 2,725 $ (2,504) $ 6,334 $ 10,356