Finance Receivables, Credit Quality Information, and Allowance for Loan Losses (Details 5) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Jun. 30, 2011
Finance receivables evaluated for impairment      
Accounts 180 or more days past due, excluding accounts of customers in bankruptcy $ 1,549 $ 1,074  
Customers in Chapter 13 bankruptcy 4,625 3,130  
Total impaired accounts specifically evaluated 6,174 4,204  
Finance receivables evaluated collectively 339,237 302,390  
Total loans 345,411 306,594 259,200
Accounts in bankruptcy in nonaccrual status 902 783  
Amount of the specific reserve for impaired accounts 3,089 2,187  
Amount of the general component of the reserve $ 17,691 $ 17,113