NOTES AND BONDS PAYABLE (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Notes and Bonds Payable [Abstract]
Interest expense	$ 28,849	$ 31,054	$ 37,149
Amortization of deferred financing costs	3,606	3,640	4,363
Interest payable	4,800	5,200
Real Estate [Line Items]
Interest costs capitalized	2,739	2,565	2,339
Undeveloped Land
Real Estate [Line Items]
Interest costs capitalized	$ 2,700	$ 2,600	$ 2,300