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
Lease cost
Operating lease cost	$ 1,867	$ 1,688	$ 3,805	$ 3,351
Sublease income	(11)	(15)	(22)	(39)
Total lease cost	$ 1,856	$ 1,673	3,783	3,312
Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases			$ 3,596	3,441
Operating right-of-use assets obtained in exchange for lease liabilities				$ 39,825
Weighted-average remaining lease term-operating leases	7 years 8 months 12 days		7 years 8 months 12 days		7 years 9 months 18 days
Weighted-average discount rate-operating leases	3.20%		3.20%		3.20%
Renewal options			true
Minimum
Lease cost
Renewal term	5 years		5 years
Maximum
Lease cost
Renewal term	10 years		10 years