Allowance For Credit Losses (Allowance For Credit Losses And Recorded Investment In Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowances for credit losses:
Ending balance
Ending balance: individually evaluated for impairment
Ending balance: collectively evaluated for impairment
Ending balance: loans acquired with deteriorated credit quality
Financing receivables:
Ending balance	100	256
Ending balance: individually evaluated for impairment	100	256
Ending balance: collectively evaluated for impairment
Ending balance: loans acquired with deteriorated credit quality
Finance Leases [Member]
Allowances for credit losses:
Ending balance
Ending balance: individually evaluated for impairment
Ending balance: collectively evaluated for impairment
Ending balance: loans acquired with deteriorated credit quality
Financing receivables:
Ending balance	100	256
Ending balance: individually evaluated for impairment	100	256
Ending balance: collectively evaluated for impairment
Ending balance: loans acquired with deteriorated credit quality