Note 13 - Stock-based Compensation - Stock-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
The 2006, 2016 and 2021 [Member]
Stock-based Compensation	$ 32,676	$ 13,381	$ 50,475	$ 16,235
Cost of Sales [Member]
Stock-based Compensation				19,605
Cost of Sales [Member] | The 2006, 2016 and 2021 [Member]
Stock-based Compensation	2,428	214	2,790	316
Selling and Marketing Expense [Member]
Stock-based Compensation				49,881
Selling and Marketing Expense [Member] | The 2006, 2016 and 2021 [Member]
Stock-based Compensation	2,171	7,917	13,073	9,227
General and Administrative Expense [Member]
Stock-based Compensation				20,918
General and Administrative Expense [Member] | The 2006, 2016 and 2021 [Member]
Stock-based Compensation	13,020	5,201	19,375	6,496
Research and Development Expense [Member]
Stock-based Compensation				8,760
Research and Development Expense [Member] | The 2006, 2016 and 2021 [Member]
Stock-based Compensation	$ 15,057	$ 49	$ 15,237	$ 196