Other Financial Instruments (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Selling, General and Administrative Expenses [Member] | Undisbursed Loan Commitment [Member]
     
Loss Contingencies [Line Items]      
Credit loss exposure expense (benefit) $ (440) $ (22) $ (775)
WebBank
     
Loss Contingencies [Line Items]      
Undisbursed loan commitment 155,378 113,350  
WebBank | Other Current Liabilities [Member] | Undisbursed Loan Commitment [Member]
     
Loss Contingencies [Line Items]      
Accrual for credit exposure $ 740 $ 1,696