Note C - Revenue Recognition - Revenue by Major Product Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue, net	$ 222,818	$ 211,565	$ 234,623
Percent of Revenue	100.00%	100.00%	100.00%
CATV [Member]
Revenue, net	$ 118,169	$ 94,266	$ 37,944
Percent of Revenue	53.00%	44.60%	16.20%
Data Center [Member]
Revenue, net	$ 77,094	$ 97,461	$ 173,437
Percent of Revenue	34.60%	46.10%	73.90%
Telecom [Member]
Revenue, net	$ 24,727	$ 16,247	$ 21,092
Percent of Revenue	11.10%	7.70%	9.00%
FTTH [Member]
Revenue, net	$ 129	$ 957	$ 110
Percent of Revenue	0.10%	0.50%	0.00%
Product and Service, Other [Member]
Revenue, net	$ 2,699	$ 2,634	$ 2,040
Percent of Revenue	1.20%	1.20%	0.90%