Acquisitions Acquisitions - Pro Forma Summary of Operations (Details) - Hu-Friedy - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Oct. 31, 2019	Oct. 31, 2018
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Actual revenue from acquiree	$ 18,725
Pro forma net sales	296,454	$ 279,428
Pro forma net income	$ 952	$ 19,619
Pro forma earnings per common share, basic (in dollars per share)	$ 0.02	$ 0.46
Pro forma earnings per common share, diluted (in dollars per share)	$ 0.02	$ 0.46

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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