Note 14 - Goodwill and Goodwill Impairment (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Sep. 30, 2021
Goodwill, Ending Balance	$ 372,189	$ 372,189
Goodwill, Impairment Loss	$ 0

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Name Accounting Standards Codification
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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration