Note 16 - Segment and Geographic Information - Revenue By Product Family (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 1,207,798	$ 844,452	$ 627,921
DC To DC Products [Member]
Revenue	1,147,329	800,478	589,651
Lighting Control Products [Member]
Revenue	$ 60,469	$ 43,974	$ 38,270

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details