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Investments (Narrative) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2013 property | Sep. 30, 2012 | Sep. 30, 2013 property | Sep. 30, 2012 | Dec. 31, 2011 | Dec. 31, 2012
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity Investments | $ 4,666 |  | $ 4,666 |  |  | $ 4,332
Equity Method Investment, Ownership Percentage | 45.00% |  | 45.00% |  |  |
Payments to Acquire Interest in Joint Venture |  |  |  |  | 3,000 |
Equity in Income/(Loss) of Nonconsolidated Investment | 296 | 310 | 892 | 643 |  |
Capital distributions received from equity method investment | 90 |  | 558 |  |  |
Capital Leased Assets, Number of Units | 2 |  | 2 |  |  |
Capital Lease Length Of Lease Term | 9 years 6 months |  | 9 years 6 months |  |  |
Capital Lease Length Of Renewal Term | 5 years 6 months |  | 5 years 6 months |  |  |
Capital Leases, Monthly Rent |  |  | 17 |  |  |
Capital Leases Balloon Payment In Direct Financing Leases | 488 |  | 488 |  |  |
Capital Leases, Net Investment in Direct Financing Leases | $ 1,250 |  | $ 1,250 |  |  | $ 1,327
Capital Leased Land [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Capital Leased Assets, Number of Units | 5 |  | 5 |  |  |

X
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- Definition Balloon payment related to a capital lease that is required to be paid either at the termination of the lease or during the initial term of the lease. + References No definition available. + Details
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- Definition The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496975&loc=d3e45377-112738 + Details
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