ACCOUNTING POLICIES AND PRONOUNCEMENTS (Selling Profit and Interest Income from Sales-type Leases) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accounting Policies [Abstract]
Selling profit from sales-type leases	$ 13,537		$ 13,537
Interest income from sales-type leases	$ 1,088	$ 0	$ 1,088	$ 0