GOODWILL AND INTANGIBLE ASSETS (Intangible) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-lived intangible assets
Weighted Average Amortization Period	13 years
Cost	$ 64,663	$ 56,453
Accumulated Amortization	18,956	14,788
Net Value	45,707	41,665
Indefinite-lived intangible assets
Net Value	34,800	35,122
Total intangible assets
Cost	99,463	91,575
Net Value	80,507	76,787
Trade name
Indefinite-lived intangible assets
Net Value	32,300	32,300
Other
Indefinite-lived intangible assets
Net Value	$ 2,500	2,822
Customer relationships
Finite-lived intangible assets
Weighted Average Amortization Period	14 years
Cost	$ 60,431	52,221
Accumulated Amortization	15,350	11,331
Net Value	45,081	40,890
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	406	257
Net Value	$ 626	$ 775