Note 6 - Goodwill and Intangibles - Changes in customer list intangible (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance at the beginning of period	$ 9,349	$ 11,381
Intangibles amortization	2,854	2,032	$ 2,149
Balance at the end of the period	$ 16,759	$ 9,349	11,381
Customer Lists [Member]
Balance at the beginning of period			1,504
Intangibles amortization			(64)
Bates Companies \| Customer Lists [Member]
Sale of Bates Companies			$ (1,440)

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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