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Income Taxes (Provision For Income Taxes From Continuing Operations Differs From The Federal Statutory Rate) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Income Taxes [Abstract]      
Statutory rate, amount $ (291) $ 7,758 $ 5,910
Intangible asset impairment, amount 7,241 1,514  
State taxes, less federal effect, amount 1,382 1,282 1,107
Change in valuation allowance (2,268) (39) (216)
Federal tax credits (517) (270)  
Uncertain tax positions, amount (515) (872) (228)
Foreign rate differential, amount (163) (335) (344)
Non-deductible expenses (66) 366 1,443
Other, amount (6) 113 (3)
Provision for (benefit of) income taxes $ 4,797 $ 9,517 $ 7,669
Statutory rate, percentage 35.00% 35.00% 35.00%
Intangible asset impairment, percentage (870.30%) 6.80% 0.00%
State taxes, less federal effect, percentage (166.10%) 5.80% 6.60%
Change in valuation allowance, percentage 272.60% (0.20%) (1.30%)
Federal tax credits, percentage 62.10% (1.20%) 0.00%
Uncertain tax positions, percentage 61.90% (3.90%) (1.40%)
Foreign rate differential, percentage 19.60% (1.50%) (2.00%)
Non-deductible expenses, percentage 7.90% 1.70% 8.50%
Other, percentage 0.70% 0.50% 0.00%
Effective income tax rate, percentage (576.60%) 43.00% 45.40%