LEASES - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Operating leases, remaining lease term	16 years
Operating leases, option to extend	9 years
Operating lease right-of-use assets	$ 11,600
Operating lease right-of-use liabilities	11,600
Operating leases liabilities, not yet commenced	6,900
Operating lease right- of use assets, not yet commenced	6,900
Occupancy Expenses [Member]
Operating leases, rental expense	$ 418
Minimum
Operating leases, remaining lease term	1 year
Maximum
Operating leases, remaining lease term	26 years