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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On February 14, 2020, Apergy amended its credit agreement, which among other things (i) provides for the incurrence of an additional $150 million of revolving commitments under the amended credit agreement, upon consummation of the Merger as described in Part 1, Item 1, (ii) permits the consummation of the Merger and the incurrence of a senior secured term loan facility in an aggregate amount up to $537 million by ChampionX, and (iii) continues to provide that all obligations under the amended agreement continue to be guaranteed by certain of Apergy’s wholly owned U.S. subsidiaries.