Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Other Current Liabilities [Abstract]
Customer advances (deposits)	$ 26,460	$ 25,043
Acquisition obligations (upfront purchase and contingent consideration)	2,449	2,443
Total	$ 28,909	$ 27,486

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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