GOODWILL AND OTHER INTANGIBLE ASSETS - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-lived intangibles
Finite-lived intangibles, Cost	$ 244,536	$ 171,172
Accumulated Amortization	(87,486)	(61,405)
Net	157,050	109,767
Indefinite-lived intangibles
Total intangibles, Cost	255,011	181,647
Total intangibles, Net	167,525	120,242
Trademarks
Indefinite-lived intangibles
Indefinite-lived intangibles	10,475	10,475
Customer relationships
Finite-lived intangibles
Finite-lived intangibles, Cost	244,036	170,472
Accumulated Amortization	(87,199)	(61,050)
Net	156,837	109,422
Noncompete agreements
Finite-lived intangibles
Finite-lived intangibles, Cost	500	550
Accumulated Amortization	(287)	(227)
Net	213	323
Vendor lists
Finite-lived intangibles
Finite-lived intangibles, Cost	0	150
Accumulated Amortization	0	(128)
Net	$ 0	$ 22

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before accumulated amortization of intangible assets, excluding goodwill.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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-Paragraph 2
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