LEASES (Maturities of Operating Lease Liabilities) (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Maturities of operating lease liabilities
Remainder of 2019	$ 15,250
2020	17,924
2021	13,675
2022	9,490
2023	6,748
Thereafter	17,564
Total lease payments	80,651
Less imputed interest	(8,529)
Total operating lease liabilities	72,122
Land and Structures
Maturities of operating lease liabilities
Remainder of 2019	14,423
2020	16,914
2021	13,401
2022	9,490
2023	6,748
Thereafter	17,564
Total lease payments	78,540
Less imputed interest	(8,454)
Total operating lease liabilities	70,086
Equipment and Others
Maturities of operating lease liabilities
Remainder of 2019	827
2020	1,010
2021	274
Total lease payments	2,111
Less imputed interest	(75)
Total operating lease liabilities	$ 2,036