|**Stockholders' Equity (Tables)**                                                                                                                       | 12 Months Ended                                                                                                                                                                                                                                                                                                                                
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|**Stockholders' Equity Note [Abstract]**                                                                                                                |                                                                                                                                                                                                                                                                                                                                                
|Schedule Of Share Based Payment Award Stock Options Valuation Assumptions [Table Text Block]                                                            | 2010Expected term (years)5.0 - 6.5Volatility52.6% - 55.8%Risk-free interest rate2% - 2.9%                                                                                                                                                                                                                                                      
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|                                                                                                                                                        | Expected term (years)                                                                                                                                                                                                                                                                                                                          
|                                                                                                                                                        | Volatility                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                        | Risk-free interest rate                                                                                                                                                                                                                                                                                                                        
|Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block] | WeightedWeightedAverageAggregateAverageRemainingIntrinsicSharesExerciseContractualValue(in thousands)PriceTerm(in thousands)Outstanding at January 1, 20121,087$ 7.27Exercised(320)$ 6.62Forfeited(14)$ 5.86Expired(34)$ 5.93Outstanding at December 31, 2012719$ 7.653.7 years$ 1,503Exercisable at December 31, 2012676$ 7.713.5 years$ 1,377
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|                                                                                                                                                        | Outstanding at January 1, 2012                                                                                                                                                                                                                                                                                                                 
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|                                                                                                                                                        | Outstanding at December 31, 2012                                                                                                                                                                                                                                                                                                               
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|Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]                                                          | WeightedAverageGrant DateSharesFair ValueNonvested at January 1, 20121,561$6.89Granted731$9.23Vested(1,156)$5.73Forfeited(9)$10.90Nonvested at December 31, 20121,127$9.59                                                                                                                                                                     
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|                                                                                                                                                        | Nonvested at January 1, 2012                                                                                                                                                                                                                                                                                                                   
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|                                                                                                                                                        | Nonvested at December 31, 2012                                                                                                                                                                                                                                                                                                                 
|Schedule Of Share-based Compensation [Table Text Block]                                                                                                 | 201220112010Share-based compensation expense$5,0727,2435,385Adjustment to fair value of liability classified awards(32)(623)1,348Total share-based compensation expense$5,0406,6206,733                                                                                                                                                        
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|                                                                                                                                                        | Share-based compensation expense                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                        | Adjustment to fair value of liability classified awards                                                                                                                                                                                                                                                                                        
|                                                                                                                                                        | Total share-based compensation expense                                                                                                                                                                                                                                                                                                         

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