LEASES - Direct Financing Leases (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Leases [Abstract]
Interest income on lease receivable	$ 3,813	$ 3,109	$ 7,379	$ 3,778
Interest income on deferred fees and costs	93	206	188	263
Total direct financing lease income	3,906	$ 3,315	7,567	$ 4,041
Leasing receivables
Lease receivables	241,570		241,570		$ 217,076
Unearned income	(31,279)		(31,279)		(28,446)
Deferred fees and costs	2,842		2,842		1,962
Net investment in direct financing leases	$ 213,133		$ 213,133		$ 190,592