GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill impairment			$ 0		$ 0
Amortization of intangible assets	$ 2,761,000	$ 1,994,000	5,543,000	$ 3,591,000
Cost of sales amortization expenses	$ 437,000	$ 437,000	$ 874,000	$ 734,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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