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Income Taxes (Details Textual) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Change From Non Taxable Acquisition       $ 3,188
Income Taxes Receivable 313 195 313  
Accrued Income Taxes 5,381 4,725 5,381  
Income Tax Examination, Penalties and Interest Expense       1,093
Deferred Tax Liability, Accrued and Other Liabilities 51 49 51  
Deferred Tax Assets Other Current Assets 387 305 387  
Deferred Tax Assets, Operating Loss Carryforwards, Domestic   67,308    
Deferred Tax Assets, Operating Loss Carryforwards, Foreign   39,899    
Indefinite Loss Carryforwards   168,574    
Valuation Allowance, Deferred Tax Asset, Change in Amount 47,422 16,240 44,230 7,986
Unrecognized Tax Benefits 4,717 4,166 4,717  
Operating Loss Carryforwards, Expiration Dates   years 2015 through 2031    
Non-deductible stock-based compensation   7,698 7,144 4,941
Additional tax reserve   0 0 4,100
United States [Member]
        
Indefinite Loss Carryforwards   56,265    
State and Local Jurisdiction [Member]
        
Operating Loss Carryforwards   170,329    
Canadian [Member]
        
Indefinite Loss Carryforwards   $ 112,309