DIVESTITURES - Narrative (Details) $ in Thousands		3 Months Ended	12 Months Ended
	May 09, 2019 USD ($) annual_payment	Jun. 30, 2019 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of business, net of income taxes			$ 0	$ 1,459	$ 0
Texel Geosol, Inc. | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash purchase price of divestiture	$ 3,000
Consideration withheld	$ 400
Number of annual payments | annual_payment	3
Annual payment of consideration withheld	$ 100
Pre-tax gain on sale of business		$ 1,500
Gain on sale of business, net of income taxes		$ 1,300