Segment Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Sale of Product	$ 1,900,701	$ 1,411,263	$ 5,520,733	$ 4,801,672
Depreciation and Amortization	55,273	55,076	166,136	170,242
Segment Income (Loss)	(1,582,165)	(539,357)	(2,970,628)	(1,359,302)
Expenditures for Segment Assets	18,342	9,408	38,386	115,452
Segment Assets	12,566,309		12,566,309		$ 11,379,265
Operating Segments
Segment Reporting Information [Line Items]
Sale of Product	1,900,701	1,411,263	5,520,733	4,801,672
Depreciation and Amortization	54,076	53,248	162,487	165,215
Segment Income (Loss)	403,536	165,034	1,218,565	957,744
Expenditures for Segment Assets	8,636	2,451	28,680	108,495
Segment Assets	8,435,147		8,435,147		8,207,208
Operating Segments | Radiochemical Products
Segment Reporting Information [Line Items]
Sale of Product	605,507	433,394	1,777,903	1,216,587
Depreciation and Amortization	1,875	1,748	5,093	5,246
Segment Income (Loss)	113,906	90,953	339,059	250,424
Expenditures for Segment Assets	3,190	0	3,190	0
Segment Assets	269,388		269,388		267,920
Operating Segments | Cobalt Products
Segment Reporting Information [Line Items]
Sale of Product	116,750	67,653	420,816	573,308
Depreciation and Amortization	8,468	10,056	27,322	33,747
Segment Income (Loss)	66,229	(4,516)	221,224	305,138
Expenditures for Segment Assets	0	0	0	0
Segment Assets	1,676,881		1,676,881		1,414,240
Operating Segments | Nuclear Medicine Standards
Segment Reporting Information [Line Items]
Sale of Product	808,148	804,382	2,451,252	2,454,399
Depreciation and Amortization	3,066	1,768	7,554	10,221
Segment Income (Loss)	124,876	178,265	504,510	540,065
Expenditures for Segment Assets	0	0	0	2,881
Segment Assets	481,767		481,767		502,361
Operating Segments | Radiological Services
Segment Reporting Information [Line Items]
Sale of Product	349,565	99,807	844,898	460,874
Depreciation and Amortization	9,494	8,755	28,928	24,471
Segment Income (Loss)	135,245	26,543	375,069	186,370
Expenditures for Segment Assets	3,436	0	13,277	40,813
Segment Assets	238,775		238,775		171,354
Operating Segments | Fluorine Products
Segment Reporting Information [Line Items]
Sale of Product	0	0	0	0
Depreciation and Amortization	28,491	28,030	85,337	83,990
Segment Income (Loss)	(37,135)	(102,055)	(178,170)	(297,355)
Expenditures for Segment Assets	2,010	2,451	12,213	11,170
Segment Assets	5,728,503		5,728,503		5,801,627
Operating Segments | Transportation
Segment Reporting Information [Line Items]
Sale of Product	20,731	6,027	25,864	96,504
Depreciation and Amortization	2,682	2,891	8,253	7,540
Segment Income (Loss)	415	(24,156)	(43,127)	(26,898)
Expenditures for Segment Assets	0	0	0	53,631
Segment Assets	39,833		39,833		49,706
Corporate Allocation
Segment Reporting Information [Line Items]
Sale of Product	0	0	0	0
Depreciation and Amortization	1,197	1,828	3,649	5,027
Segment Income (Loss)	(1,985,701)	(704,391)	(4,189,193)	(2,317,046)
Expenditures for Segment Assets	9,706	$ 6,957	9,706	$ 6,957
Segment Assets	$ 4,131,162		$ 4,131,162		$ 3,172,057