SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Sep. 30, 2019	Jan. 01, 2019
Out-of-Period Adjustment Related to Prior Years
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Increase in tenant real estate tax recoveries on net lease property	$ 1.1
Accounting Standards Update 2016-02
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating lease liability		$ 2.7	$ 3.5
Operating lease, right-of-use asset		$ 2.7	$ 3.3