BUSINESS ACQUISITIONS - Schedule of Contingent Consideration (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Business Acquisition, Contingent Consideration [Roll Forward]
Loss from increase in fair value of contingent consideration liabilities	$ 239	$ (998)
Level 3 \| Potential Cash Consideration Fair Value
Business Acquisition, Contingent Consideration [Roll Forward]
Balance as of January 1, 2015	22,008
Fair value at June 30, 2015	22,247
Level 3 \| Selling, General and Administrative Expenses \| Potential Cash Consideration Fair Value
Business Acquisition, Contingent Consideration [Roll Forward]
Loss from increase in fair value of contingent consideration liabilities	$ 239

Business Acquisition, Contingent Consideration [Roll Forward]

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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