Notes Receivable And Allowance For Losses Schedule Of Notes Receivable (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Notes Receivable, Related Parties	$ 29,840	$ 26,093
Allowance for losses on non-impaired loans	1,020	1,388
Allowance for losses on receivables specifically evaluated for impairment	8,208	8,638
Total loan reserves	9,228	10,026
Net carrying value	20,612	16,067
Current portion, net	3,104	3,966
Long-term portion, net	17,508	12,101
Forgivable Notes Receivable
Notes Receivable, Related Parties	7,948	7,753
Allowance for losses on non-impaired loans	795	775
Allowance for losses on receivables specifically evaluated for impairment	0	0
Total loan reserves	795	775
Net carrying value	7,153	6,978
Current portion, net	102	114
Long-term portion, net	7,051	6,864
Mezzanine & Other Notes Receivable
Notes Receivable, Related Parties	21,892	18,340
Allowance for losses on non-impaired loans	225	613
Allowance for losses on receivables specifically evaluated for impairment	8,208	8,638
Total loan reserves	8,433	9,251
Net carrying value	13,459	9,089
Current portion, net	3,002	3,852
Long-term portion, net	10,457	5,237
Senior Notes [Member]
Notes Receivable, Related Parties	7,900	3,846
Senior Notes [Member] | Forgivable Notes Receivable
Notes Receivable, Related Parties	0	0
Senior Notes [Member] | Mezzanine & Other Notes Receivable
Notes Receivable, Related Parties	7,900	3,846
Senior Subordinated Notes
Notes Receivable, Related Parties	13,992	14,494
Senior Subordinated Notes | Forgivable Notes Receivable
Notes Receivable, Related Parties	0	0
Senior Subordinated Notes | Mezzanine & Other Notes Receivable
Notes Receivable, Related Parties	13,992	14,494
Unsecured Notes
Notes Receivable, Related Parties	7,948	7,753
Unsecured Notes | Forgivable Notes Receivable
Notes Receivable, Related Parties	7,948	7,753
Unsecured Notes | Mezzanine & Other Notes Receivable
Notes Receivable, Related Parties	$ 0	$ 0