CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Accounts receivable and other, allowance for doubtful accounts	$ 38,000	$ 38,000
Class A Units
Units; issued	7,002,806	6,956,212
Units; outstanding	7,002,806	6,956,212
Class B Units
Units; issued	751,956	751,956
Units; outstanding	751,956	751,956
Class C Units
Units; issued	872	872
Units; outstanding	872	872
Class D Units
Units; issued	128	128
Units; outstanding	128	128