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Revenue From Contracts With Customers (Disaggregation of Revenue, By Application) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales by Application
Total	$ 345,585	$ 249,242
Materials processing
Sales by Application
Total	317,241	218,074
Other applications
Sales by Application
Total	$ 28,344	$ 31,168

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Sales By Application [Abstract]

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

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