Note 14 - Revenue - Revenues by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Total revenue	$ 37,703	$ 36,220
Product, Freezer and Thaw [Member]
Total revenue	12,381	15,335
Product, Cell Processing [Member]
Total revenue	18,993	14,899
Storage and Storage Services Product Revenue [Member]
Total revenue	219	154
Storage and Storage Services [Member]
Total revenue	3,825	3,090
Service, Freezer and Thaw [Member]
Total revenue	646	0
Storage and Storage Services Rental Revenue [Member]
Total revenue	$ 1,639	$ 2,742