CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Advances to Affiliated Real Estate Limited Partnership) (Details) (Affiliated Real Estate Limited Partnership [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Affiliated Real Estate Limited Partnership [Member]
Related Party Transaction [Line Items]
Maximum revolving note, related party	$ 3,000,000		$ 3,000,000
Interest rate description			bearing interest at the prime rate
Notes receivable, related party	2,600,000		2,600,000		2,500,000
Other revenues from transactions with related party	$ 17,000	$ 4,000	$ 53,000	$ 40,000