Note C - Revenue Recognition - Revenue by Major Product Category (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenue, net	$ 249,365	$ 217,646	$ 222,818
Percent of Revenue	100.00%	100.00%	100.00%
CATV [Member]
Revenue, net	$ 87,713	$ 59,942	$ 118,169
Percent of Revenue	35.20%	27.50%	53.00%
Data Center [Member]
Revenue, net	$ 148,525	$ 141,213	$ 77,094
Percent of Revenue	59.50%	64.90%	34.60%
Telecom [Member]
Revenue, net	$ 10,980	$ 13,831	$ 24,727
Percent of Revenue	4.40%	6.40%	11.10%
FTTH [Member]
Revenue, net	$ 3	$ 56	$ 129
Percent of Revenue	0.00%	0.00%	0.10%
Product and Service, Other [Member]
Revenue, net	$ 2,144	$ 2,604	$ 2,699
Percent of Revenue	0.90%	1.20%	1.20%