RIGHT-OF-USE ASSETS UNDER OPERATING LEASES, NET (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Leases [Abstract]
Right-of-use assets under operating leases	$ 39,729,000	$ 0
Less: Accumulated amortization	(10,655,000)	0
Total	29,074,000	0		$ 42,100,000
Amortization of right-of-use assets under operating leases	$ 11,769,000	$ 0	$ 0