Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($)	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sale of Product	$ 2,527,852	$ 2,801,026
Depreciation and Amortization	64,985	69,974
Segment Income (Loss)	(51,958)	34,404
Expenditures for Segment Assets	5,084	19,708
Segment Assets	14,115,760		$ 12,990,076
Operating Segments
Segment Reporting Information [Line Items]
Sale of Product	2,527,852	2,801,026
Depreciation and Amortization	60,248	65,130
Segment Income (Loss)	779,481	819,966
Expenditures for Segment Assets	5,084	19,708
Segment Assets	11,682,720		10,942,023
Operating Segments \| Radiochemical Products
Segment Reporting Information [Line Items]
Sale of Product	463,232	583,541
Depreciation and Amortization	8,817	5,014
Segment Income (Loss)	96,006	40,520
Expenditures for Segment Assets
Segment Assets	287,605		344,994
Operating Segments \| Cobalt Products
Segment Reporting Information [Line Items]
Sale of Product	376,089	327,778
Depreciation and Amortization	1,080	4,043
Segment Income (Loss)	192,870	184,792
Expenditures for Segment Assets	3,494
Segment Assets	3,095,941		2,611,939
Operating Segments \| Nuclear Medicine Standards
Segment Reporting Information [Line Items]
Sale of Product	1,100,922	1,002,113
Depreciation and Amortization	15,619	17,938
Segment Income (Loss)	216,822	223,942
Expenditures for Segment Assets		18,148
Segment Assets	2,200,139		2,113,960
Operating Segments \| Radiological Services
Segment Reporting Information [Line Items]
Sale of Product	587,609	887,594
Depreciation and Amortization	8,636	12,039
Segment Income (Loss)	311,279	402,012
Expenditures for Segment Assets
Segment Assets	535,829		281,077
Operating Segments \| Fluorine Products
Segment Reporting Information [Line Items]
Sale of Product
Depreciation and Amortization	26,095	26,095
Segment Income (Loss)	(37,495)	(31,299)
Expenditures for Segment Assets	1,590	1,560
Segment Assets	5,563,206		5,590,053
Corporate Allocation
Segment Reporting Information [Line Items]
Sale of Product
Depreciation and Amortization	4,737	4,844
Segment Income (Loss)	(831,439)	(785,562)
Expenditures for Segment Assets
Segment Assets	$ 2,416,416		$ 2,048,053

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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