Note 3 - Goodwill (Details Textual) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($)
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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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration