GOODWILL AND INTANGIBLE ASSETS (Intangible) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Finite-lived intangible assets
Weighted Average Amortization Period			13 years
Cost	$ 56,953		$ 56,953		$ 56,453
Accumulated Amortization	16,775		16,775		14,788
Net Value	40,178		40,178		41,665
Indefinite-lived intangible assets
Net Value	35,122		35,122		35,122
Total intangible assets
Cost	92,075		92,075		91,575
Net Value	75,300		75,300		76,787
Amortization expense on intangible assets
Intangible amortization expense	1,000	$ 1,100	1,986	$ 2,218
Approximate annual amortization expense on intangible assets expected for years 2016 - 2020			4,000
Trade name
Indefinite-lived intangible assets
Net Value	32,300		32,300		32,300
Other
Indefinite-lived intangible assets
Net Value	2,822		$ 2,822		2,822
Customer relationships
Finite-lived intangible assets
Weighted Average Amortization Period			14 years
Cost	52,721		$ 52,721		52,221
Accumulated Amortization	13,242		13,242		11,331
Net Value	39,479		$ 39,479		40,890
Driver network
Finite-lived intangible assets
Weighted Average Amortization Period			3 years
Cost	3,200		$ 3,200		3,200
Accumulated Amortization	3,200		$ 3,200		3,200
Other
Finite-lived intangible assets
Weighted Average Amortization Period			8 years
Cost	1,032		$ 1,032		1,032
Accumulated Amortization	333		333		257
Net Value	$ 699		$ 699		$ 775