Note 5 - Goodwill and Other Intangible Assets - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Balance, goodwill	$ 85,048
Balance, intangibles	6,091
Amortization, intangibles	(381)	$ (427)
Balance, goodwill	85,048	$ 85,048
Balance, intangibles	$ 5,710

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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