Notes Receivable And Allowance For Losses Schedule of notes receivable (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Notes Receivable, Related Parties	$ 56,234,000	$ 60,068,000
Allowance for losses on non-impaired loans	3,257,000	2,261,000
Allowance for losses on receivables specifically evaluated for impairment	8,289,000	8,289,000
Total loan reserves	11,546,000	10,550,000
Net carrying value	44,688,000	49,518,000
Current portion, net	12,816,000	14,415,000
Long-term portion, net	31,872,000	35,103,000
Senior [Member]
Notes Receivable, Related Parties	18,052,000	27,549,000
Subordinated [Member]
Notes Receivable, Related Parties	14,152,000	15,019,000
Unsecured [Member]
Notes Receivable, Related Parties	24,030,000	17,500,000
Forgivable Notes Receivable [Member]
Notes Receivable, Related Parties	20,625,000	16,235,000
Allowance for losses on non-impaired loans	1,650,000	1,623,000
Allowance for losses on receivables specifically evaluated for impairment	0	0
Total loan reserves	1,650,000	1,623,000	795,000
Net carrying value	18,975,000	14,612,000
Current portion, net	361,000	420,000
Long-term portion, net	18,614,000	14,192,000
Forgivable Notes Receivable [Member] | Senior [Member]
Notes Receivable, Related Parties	0	0
Forgivable Notes Receivable [Member] | Subordinated [Member]
Notes Receivable, Related Parties	0	0
Forgivable Notes Receivable [Member] | Unsecured [Member]
Notes Receivable, Related Parties	20,625,000	16,235,000
Mezzanine & Other Notes Receivable [Member]
Notes Receivable, Related Parties	35,609,000	43,833,000
Allowance for losses on non-impaired loans	1,607,000	638,000
Allowance for losses on receivables specifically evaluated for impairment	8,289,000	8,289,000
Total loan reserves	9,896,000	8,927,000	8,433,000
Net carrying value	25,713,000	34,906,000
Current portion, net	12,455,000	13,995,000
Long-term portion, net	13,258,000	20,911,000
Mezzanine & Other Notes Receivable [Member] | Senior [Member]
Notes Receivable, Related Parties	18,052,000	27,549,000
Mezzanine & Other Notes Receivable [Member] | Subordinated [Member]
Notes Receivable, Related Parties	14,152,000	15,019,000
Mezzanine & Other Notes Receivable [Member] | Unsecured [Member]
Notes Receivable, Related Parties	$ 3,405,000	$ 1,265,000