Note 7 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Business Acquisition, Goodwill, Expected Tax Deductible Amount	$ 106.0
Amortization of Intangible Assets	$ 4.4	$ 1.3	$ 1.3

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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