INTANGIBLE ASSETS AND GOODWILL - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	$ (11,896)	$ (11,065)
Total	19,511
Indefinite-lived intangible assets—trademarks	10,162	10,183
Total intangible assets, Gross Carrying Amount	43,890	39,779
Total intangible assets, Net Book Value	31,994	28,714
GOODWILL	45,192	45,192
Total intangible assets and goodwill, Gross Carrying Amount	89,082	84,971
Total intangible assets and goodwill, Net Book Value	77,186	73,906
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Carrying Amount	26,800	26,800
Accumulated Amortization	(11,699)	(11,029)
Total	15,101	15,771
Software license
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Carrying Amount	4,607	1,926
Accumulated Amortization	(197)	(36)
Total	4,410	1,890
Software license in process
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets, Gross Carrying Amount	2,321	870
Accumulated Amortization	0	0
Total	$ 2,321	$ 870