GOODWILL AND INTANGIBLE ASSETS (Intangible) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-lived intangible assets
Weighted Average Amortization Period	13 years
Cost	$ 64,663	$ 64,663
Accumulated Amortization	21,226	18,956
Net Value	43,437	45,707
Indefinite-lived intangible assets
Net Value	34,800	34,800
Total intangible assets
Cost	99,463	99,463
Net Value	78,237	80,507
Trade name
Indefinite-lived intangible assets
Net Value	32,300	32,300
Other
Indefinite-lived intangible assets
Net Value	$ 2,500	2,500
Customer relationships
Finite-lived intangible assets
Weighted Average Amortization Period	14 years
Cost	$ 60,431	60,431
Accumulated Amortization	17,548	15,350
Net Value	42,883	45,081
Customer relationships | LDS
Finite-lived intangible assets
Cost	$ 7,700
Driver network
Finite-lived intangible assets
Weighted Average Amortization Period	3 years
Cost	$ 3,200	3,200
Accumulated Amortization	$ 3,200	3,200
Other
Finite-lived intangible assets
Weighted Average Amortization Period	9 years
Cost	$ 1,032	1,032
Accumulated Amortization	478	406
Net Value	$ 554	$ 626