SIGNIFICANT ACCOUNTING POLICIES (Details 3) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Amortization of debt issuance costs	$ 1,418,000	$ 1,344,000	$ 1,352,000
Amortization of facility fees	790,000	790,000	736,000
Leasing costs amortization expense	14,449,000	13,167,000	11,493,000
Rental Income (Increase) Decrease For Amortization Of Acquired In Place Lease Intangibles	(1,451,000)	(1,229,000)	(667,000)
Amortization of Intangible Assets	5,620,000	$ 4,967,000	$ 4,204,000
Future Amortization In Place Lease Expense Year One	4,467,000
Future Amortization In Place Lease Expense Year Two	3,143,000
Future Amortization In Place Lease Expense Year Three	2,567,000
Future Amortization In Place Lease Expense Year Four	1,956,000
Future Amortization In Place Lease Expense Year Five	$ 1,309,000