SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, FOREIGN CURRENCY AND ACCUMULATED OTHER COMPREHENSIVE LOSS, NET OF TAX (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Accounting Policies [Abstract]
Unrealized foreign currency transaction gains	$ 500,000	$ 500,000	$ 900,000	$ 500,000
Foreign currency, net			789,000	0
Accumulated Other Comprehensive Loss Net of Tax [Abstract]
Foreign currency translation adjustment					$ (7,855,000)
Net unrealized loss on investments, net of tax	0		0		(730,000)
Total accumulated other comprehensive loss	$ (19,941,000)		$ (19,941,000)		$ (8,585,000)
Reclassification out of accumulated other comprehensive loss		$ 0		$ 0