Allowance for Credit Losses (Textuals) (Details) (USD $) In Thousands, unless otherwise specified				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Finance Leases Financing Receivable [Member]	Dec. 31, 2012 Finance Leases Financing Receivable [Member]	Dec. 31, 2011 Finance Leases Financing Receivable [Member]	Dec. 31, 2013 Notes Receivable [Member]	Dec. 31, 2012 Notes Receivable [Member]	Dec. 31, 2011 Notes Receivable [Member]
Allowance for credit losses (Textuals)
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 4,573	$ 2,572
Financing Receivable, Individually Evaluated for Impairment						105,930	78,181		17,340	12,855
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	1,670	2,060
Past Due Period Of Financing Receivable Accruing Interest				90 days
Financing Receivable, Allowance for Credit Losses	4,573	2,572	2,257			439	525	210	4,134	2,047	2,047
Impaired Financing Receivable, Related Allowance						$ 4,134	$ 2,047