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Note R - Segment and Geographic Information (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Number of Reportable Segments 1    
Revenue from Contract with Customer, Excluding Assessed Tax $ 222,818 $ 211,565 $ 234,623
Percentage of Revenue 100.00% 100.00% 100.00%
CATV [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 118,169 $ 94,266 $ 37,944
Percentage of Revenue 53.00% 44.60% 16.20%
Data Center [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 77,094 $ 97,461 $ 173,437
Percentage of Revenue 34.60% 46.10% 73.90%
Telecom [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 24,727 $ 16,247 $ 21,092
Percentage of Revenue 11.10% 7.70% 9.00%
FTTH [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax $ 129 $ 957 $ 110
Percentage of Revenue 0.10% 0.50% 0.00%