Note 12 - Property and Equipment, Net (Details Textual) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating Lease, Right-of-Use Asset		$ 58,226	$ 68,276	$ 58,226	$ 68,276	$ 62,256
Gain (Loss) on Disposition of Assets, Total		5,159	3,057	39,349	4,870
Operating Lease, Liability, Noncurrent		$ 39,908	$ 51,879	$ 39,908	$ 51,879	$ 46,769
Sale-leaseback Associated with Two Properties in California [Member]
Sale Leaseback Transaction, Net Book Value, Total	$ 11,100
Operating Lease, Right-of-Use Asset	2,400
Gain (Loss) on Disposition of Assets, Total	29,700
Operating Lease, Liability, Noncurrent	$ 2,400