Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Components of inventories
Total	$ 60,500	$ 58,215
Reserve for obsolete and excess inventory	(4,595)	(5,328)
Inventories, net	$ 55,905	$ 52,887

Amount of valuation reserve for inventory.

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