Note 13 - Segment Information - Assets by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue	$ 148,580	$ 151,568	$ 147,954
Long-lived assets	98,077	86,745	83,833
Total assets	122,437	130,461	157,540
UNITED STATES
Revenue	148,580	150,775	144,987
Long-lived assets	98,077	86,718	83,722
Total assets	122,232	130,151	153,879
CANADA
Revenue	0	793	2,967
Long-lived assets	0	27	111
Total assets	$ 205	$ 310	$ 3,661