OPERATING LEASES (Details)	6 Months Ended
	Jun. 30, 2019 USD ($)
OPERATING LEASES
Variable costs	$ 0
Right-of-use assets	12,355,000
Operating lease liabilities	$ 14,806,000
Weighted-average discount rate	3.58%
Weighted-average remaining lease term	11 years 8 months 12 days
Cash paid for amounts included in the measurement of operating lease liabilities	$ 907,000