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Income Taxes (Details 1) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]      
Statutory tax rate 35.00% 35.00% 35.00%
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]      
Income (benefit) taxes at statutory rates $ (23,118) $ (6,894) $ (5,352)
State income tax, net of federal benefit (1,651) (1,234) (1,378)
Change in valuation allowance 8,819 7,415 7,679
IRC Section 382/383 limitation 675 18 918
Fair value warrant 16,129 (811) (3,090)
Stock compensation 279 603 (147)
Change in state tax rate (623) 438 125
Other (479) 495 1,272
Income Tax Expense (Benefit) $ 31 $ 30 $ 27