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Note 12 - Acquisition - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Nov. 30, 2020	Dec. 31, 2020	Nov. 20, 2020	Dec. 31, 2019	Dec. 31, 2018
Goodwill		$ 105,367		$ 96,326	$ 40,100
Mass Movement, Inc. [Member]
Consideration	$ 25,600
Accounts receivable	2,800
Property and equipment	300
Right-of-use assets	4,400
Intangibles	14,000	14,000
Accounts payable and accrued liabilities	(400)
Lease liabilities	(4,400)
Goodwill	$ 8,800	$ 9,100	$ 8,800