Allowance for Credit Losses (Textuals) (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]
Allowance for credit losses (Textuals)
Period required for considering financing receivable as non accrual status			60 days	89 days
Period for placing financing receivables on non-accrual status			89 days
The recorded investment in past-due finance lease receivables on nonaccrual status	$ 2,060	$ 1,740
Past Due Period Of Financing Receivable Accruing Interest			90 days
Interest accrued in the recorded investment in finance lease receivable	0	114
The recorded investment in impaired notes related allowance	2,047	2,047
The recorded investment in impaired notes receivable	$ 2,047	$ 2,047