Note 5 - Leases - Leases Cost (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Operating lease costs		$ 656	$ 623	$ 2,061	$ 1,694
Other		454	140	1,259	387
Total lease costs		1,110	763	3,320	2,081
Operating cash flows from operating leases		649	612	2,115	1,622
ROU assets obtained in exchange for new operating lease liabilities	[1]	$ 13	$ 793	$ 1,071	$ 4,477
Weighted-average remaining lease term (in years) (Year)		2 years 3 months 18 days		2 years 3 months 18 days		2 years 9 months 18 days
Weighted-average discount rate		2.00%		2.00%		2.00%

[1] For the year ended December 31, 2019, the amount includes $2.3 million for operating leases existing on January 1, 2019, the adoption date of ASU No. 2016-02, Leases (Topic 842).