CONSOLIDATED FUNDS AND VENTURES (Liabilities of Consolidated LIHTC Funds) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2018
Investment [Line Items]
Debt	$ 216,139	$ 149,187
Unfunded equity commitments to unconsolidated Lower Tier Property Partnerships	8,003	0
Total liabilities	304,784	$ 151,476
Consolidated Funds and Ventures
Investment [Line Items]
Debt	6,712
Unfunded equity commitments to unconsolidated Lower Tier Property Partnerships	8,003
Asset management fee payable	31,840
Other liabilities, consolidated	4,010
Total liabilities	$ 50,565
Weighted-average effective interest rate	6.50%