LEASES (Supplemental Cash Flow Information) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows used for operating leases	$ 14,696
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	12,825
Non-cash net decrease due to lease modifications:
Operating lease right-of-use assets	5,174
Operating lease liabilities	$ 5,106