LEASE (FUTURE MINIMUM LEASE PAYMENTS TABLE) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
LEASES [ABSTRACT]
Operating Leases - Year 1		$ 47,379
Operating Leases - Year 2		36,045
Operating Leases - Year 3		30,678
Operating Leases - Year 4		26,584
Operating Leases - Year 5		17,226
Thereafter		25,362
Total minimum operating lease payments		183,274
Less: Imputed Interest.	$ (35,858)
Total lease liability	152,010
Operating leases - rolling Year 1	47,985
Operating leases - rolling Year 2	39,023
Operating leases - rolling Year 3	32,837
Operating leases - rolling Year 4	28,660
Operating leases - rolling Year 5	16,929
Operating leases - rolling Thereafter	22,434
Total lease liability payments due	187,868
Sub-lease income - Year 1		(2,624)
Sub-lease income - Year 2		(2,631)
Sub-lease income - Year 3		(276)
Sublease Income Total	(6,369)	(5,531)
Sub-lease income - rolling Year 1	(2,970)
Sub-lease income - rolling Year 2	(2,566)
Sub-lease income - rolling Year 3	(373)
Sub-lease income - rolling Year 4	(345)
Sub-lease income - rolling Year 5	(115)
Finance Leases - Year 1		8,770
Finance Leases - Year 2		5,548
Finance Leases - Year 3		3,798
Finance Leases - Year 4		1,005
Finance Leases - Year 5		414
Total minimum lease payments	18,499	19,535
Less: imputed interest	(160)
Total lease liability	18,339	$ 19,535
Finance leases - rolling Year 1	7,765
Finance leases - rolling Year 2	5,911
Finance leases - rolling Year 3	3,913
Finance leases - rolling Year 4	650
Finance leases - rolling Year 5	$ 260