Allowance for Credit Losses (Details Textuals) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Allowance for credit losses (Textuals)
Period required for considering financing receivable as non accrual status	greater than 60 days
The recorded investment in past-due finance lease receivables on nonaccrual status	$ 214	$ 531
Interest accrued in the recorded investment in finance lease receivable	659	560
The recorded investment in impaired notes receivable	1,620	7,513
The recorded investment in impaired notes related allowance	$ 1,620	$ 470