Quarterly report pursuant to Section 13 or 15(d)

Customer Inducements (Details)

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Customer Inducements (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Amortization and imputed interest expense        
Amortization expense    $ 1,207    $ 3,620
Imputed interest expense    $ 202    $ 609