Note 5 - Goodwill and Intangible Assets - Carrying Value of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Balance at beginning of period	$ 12,826	$ 682	$ 682	$ 682
Goodwill acquired	0	0	12,144	0
Recast adjustments	(233)	0	(233)	0
Impairment	0	0	0	0
Balance at end of period	$ 12,593	$ 682	$ 12,593	$ 682

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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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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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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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