Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Components of inventory
Raw materials and parts	$ 130,478	$ 129,294
Work-in-progress	51,989	43,202
Finished goods	109,862	101,789
Total Inventory, Net	$ 292,329	$ 274,285

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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