Note 8 - Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2024

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended September 30, 2024									Three Months Ended September 30, 2023
			Outside		Total		% of Total					Outside		Total		% of Total
	U.S.		U.S.		Revenues		Revenues			U.S.		U.S.		Revenues		Revenues
Theranostics Products	$	2,091,564	$	91,633	$	2,183,197		56	%	$	1,413,722	$	121,176	$	1,534,898		53	%
Cobalt Products		814,845		—		814,845		21	%		289,333		39,645		328,978		11	%
Nuclear Medicine Products		643,107		283,295		926,402		23	%		832,279		222,401		1,054,680		36	%
Medical Devices Products		—		—		—		0	%		—		—		—		0	%
Fluorine Products		—		—		—		0	%		—		—		—		0	%
	$	3,549,516	$	374,928	$	3,924,444		100	%	$	2,535,334	$	383,222	$	2,918,556		100	%

	Nine Months Ended September 30, 2024									Nine Months Ended September 30, 2023
			Outside		Total		% of Total					Outside		Total		% of Total
	U.S.		U.S.		Revenues		Revenues			U.S.		U.S.		Revenues		Revenues
Theranostics Products	$	5,742,108	$	515,302	$	6,257,410		63	%	$	4,644,151	$	389,186	$	5,033,337		55	%
Cobalt Products		1,618,812		22,200		1,641,012		16	%		826,886		108,658		935,544		10	%
Nuclear Medicine Products		1,473,309		626,404		2,099,713		21	%		2,436,391		714,984		3,151,375		35	%
Medical Devices Products		—		—		—		0	%		—		—		—		0	%
Fluorine Products		—		—		—		0	%		—		—		—		0	%
	$	8,834,229	$	1,163,906	$	9,998,135		100	%	$	7,907,428	$	1,212,828	$	9,120,256		100	%