SHAREHOLDERS' EQUITY (Details) - shares		9 Months Ended	12 Months Ended
	Jun. 03, 2020	Sep. 30, 2021	Dec. 31, 2020	Feb. 28, 2015
Discontinued Operations, Disposed of By Sale | ChampionX
Shareholder's Equity
Shares accepted	4,955,552
Number of shares exchanged	122,200,000
Common Stock
Shareholder's Equity
Common stock, shares authorized to be repurchased				20,000,000
Reacquired shares (in shares)		367,141	761,245
Remaining shares authorized to be repurchased		5,978,499
Number of shares that have been repurchased through the exercise of stock options and vesting of stock awards		105,694	196,181
Number of shares reacquired through the open market or private purchases		261,447	565,064