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CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (unaudited) - 9 months ended Sep. 30, 2018 - USD ($)
$ in Thousands
Total
Common Stock, Par Value
Common Stock, Capital in excess of par value
Retained Earnings
Net Parent Investment in Apergy
Accum. Other Comp. Loss
Non-controlling Interest
Balance at Dec. 31, 2017 $ 1,640,034 $ 0 $ 0 $ 0 $ 1,661,700 $ (26,415) $ 4,749
Cumulative effect of accounting changes (Note 2) 1,300       1,315 (1,315)  
Net income 72,284     33,257 38,732   295
Other comprehensive loss (8,376)         (8,376)  
Net transfer to/from Dover (738,970)       (736,549) (2,421)  
Reclassification of net parent investment in Apergy     965,198   (965,198)    
Issuance of common stock   773 (773)        
Stock-based compensation 2,619   2,619        
Distributions to noncontrolling interest (2,720)           (2,720)
Other (111)           (111)
Balance at Sep. 30, 2018 $ 964,760 $ 773 $ 967,044 $ 33,257 $ 0 $ (38,527) $ 2,213