ACQUISITIONS (Details) - Well Chemical Services Acquisition $ in Thousands	Sep. 30, 2019 USD ($)
Consideration transferred
Cash paid	$ 10,000
Total consideration transferred	10,000
Less: identified assets acquired and liabilities assumed
Inventory	5,221
Property and equipment	4,473
Intangible assets	476
Current liabilities	(170)
Total identifiable net assets acquired	10,000
Fair value allocated to net assets acquired	$ 10,000