LEASES (Details - Maturities of Operating and Financing Lease Liabilities) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Operating Leases, After Adoption of 842
Remainder of 2019	$ 67,927
2020	84,334
2021	77,688
2022	67,351
2023	56,487
Thereafter	225,101
Total Lease Payments	578,888
Less imputed interest	(138,987)
Total	439,901
Financing Leases, After Adoption of 842
Remainder of 2019	4,374
2020	3,481
2021	2,614
2022	692
2023	0
Thereafter	0
Total Lease Payments	11,161
Less imputed interest	(562)
Total	$ 10,599
Lessee, Lease, Description [Line Items]
2019		$ 90,512
2020		80,501
2021		70,792
2022		58,806
2023		45,895
Thereafter		165,471
Total		511,977
Equipment
Lessee, Lease, Description [Line Items]
2019		14,924
2020		14,385
2021		12,966
2022		10,264
2023		7,095
Thereafter		5,144
Total		64,778
Facilities
Lessee, Lease, Description [Line Items]
2019		75,588
2020		66,116
2021		57,826
2022		48,542
2023		38,800
Thereafter		160,327
Total		$ 447,199