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Business Description, Basis of Presentation and Significant Accounting Policies - Revenue by Product Group (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Revenue
Revenue	$ 25,205	$ 28,967
North and South America
Revenue
Revenue	12,297	14,042
Asia (including Middle East) and Australia
Revenue
Revenue	7,828	8,197
Europe and Africa
Revenue
Revenue	5,080	6,728
Audio Conferencing
Revenue
Revenue	11,829	11,568
Microphones
Revenue
Revenue	9,824	10,963
Video products
Revenue
Revenue	$ 3,552	$ 6,436

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