LEASES (Maturities of Operating Lease Liabilities - 2019) (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Maturities of operating lease liabilities
Remainder of 2019	$ 10,668
2020	19,152
2021	14,716
2022	10,372
2023	7,550
Thereafter	18,109
Total lease payments	80,567
Less imputed interest	(8,254)
Total operating lease liabilities	72,313
Land and Structures
Maturities of operating lease liabilities
Remainder of 2019	10,126
2020	18,142
2021	14,442
2022	10,372
2023	7,550
Thereafter	18,109
Total lease payments	78,741
Less imputed interest	(8,198)
Total operating lease liabilities	70,543
Equipment and Others
Maturities of operating lease liabilities
Remainder of 2019	542
2020	1,010
2021	274
Total lease payments	1,826
Less imputed interest	(56)
Total operating lease liabilities	$ 1,770