Note 19 - Segments and Geographic Information - Sales and Long-lived Assets by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net sales	$ 785,602	$ 801,093
Long-lived assets	288,609	264,960
Product [Member]
Net sales	782,437	797,858
UNITED STATES
Long-lived assets	124,062	99,135
UNITED STATES | Product [Member]
Net sales	485,443	480,868
MEXICO
Long-lived assets	100,288	86,775
MEXICO | Product [Member]
Net sales	104,192	101,656
All Other [Member]
Long-lived assets	64,259	79,050
All Other [Member] | Product [Member]
Net sales	$ 192,802	$ 215,334