Notes Receivable and Allowance for Losses Schedule Of Notes Receivable (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	$ 59,442us-gaap_NotesReceivableRelatedParties	$ 50,389us-gaap_NotesReceivableRelatedParties
Allowance for losses on non-impaired loans	5,909	5,201
Allowance for losses on receivables specifically evaluated for impairment	786	786
Total loan reserves	6,695	5,987
Net carrying value	52,747us-gaap_NotesReceivableNet	44,402us-gaap_NotesReceivableNet
Current portion, net	3,966	3,961
Long-term portion, net	48,781	40,441
Forgivable Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	41,558	32,379
Allowance for losses on non-impaired loans	4,399	3,661
Allowance for losses on receivables specifically evaluated for impairment	0	0
Total loan reserves	4,399	3,661
Net carrying value	37,159	28,718
Current portion, net	162	124
Long-term portion, net	36,997	28,594
Mezzanine & Other Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	17,884	18,010
Allowance for losses on non-impaired loans	1,510	1,540
Allowance for losses on receivables specifically evaluated for impairment	786	786
Total loan reserves	2,296	2,326
Net carrying value	15,588	15,684
Current portion, net	3,804	3,837
Long-term portion, net	11,784	11,847
Senior Notes [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	10,152	10,152
Senior Notes [Member] \| Forgivable Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	0	0
Senior Notes [Member] \| Mezzanine & Other Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	10,152	10,152
Senior Subordinated Notes [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	3,844	3,863
Senior Subordinated Notes [Member] \| Forgivable Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	0	0
Senior Subordinated Notes [Member] \| Mezzanine & Other Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	3,844	3,863
Unsecured Notes [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	45,446	36,374
Unsecured Notes [Member] \| Forgivable Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	41,558	32,379
Unsecured Notes [Member] \| Mezzanine & Other Notes Receivable [Member]
Notes Receivable and Allowance for Losses [Line Items]
Notes receivable	$ 3,888	$ 3,995

Allowance for Losses on Non-impaired Loans

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Allowance for Losses on Receivables Specifically Evaluated for Impairment

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A valuation allowance for financing receivables that are expected to be uncollectible.

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Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

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For an unclassified balance sheet, amounts due from parties associated with the reporting entity as evidenced by a written promise to pay.

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Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due within 1 year (or 1 business cycle).

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Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle).

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