LEASES - Other Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 3,076	$ 10,065
Operating cash flows for financing leases	121	381
Financing cash flows for financing leases	596	1,769	$ 709
Right-of-use assets obtained in exchange for lease liabilities:
Operating leases	255	21,055
Finance leases	$ 0	$ 20
Weighted average remaining lease term, operating lease	5 years	5 years
Weighted average remaining lease term, financing lease	8 years	8 years
Weighted average discount rate, operating leases	4.80%	4.80%
Weighted average discount rate, financing leases	3.00%	3.00%