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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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Segment Information (Details) - USD ($)	3 Months Ended
Segment Information (Details) - USD ($)	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sale of Product	$ 2,801,026	$ 1,834,208
Depreciation and Amortization	69,974	55,585
Segment Income (Loss)	34,404	(786,266)
Expenditures for Segment Assets	19,708	3,974
Segment Assets	12,832,647		$ 12,005,294
Operating Segments
Segment Reporting Information [Line Items]
Sale of Product	2,801,026
Depreciation and Amortization	65,130
Segment Income (Loss)	819,966
Expenditures for Segment Assets	19,708
Segment Assets	10,398,700
Operating Segments \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		1,834,208
Depreciation and Amortization		52,057
Segment Income (Loss)		428,228
Expenditures for Segment Assets		3,974
Segment Assets			10,210,984
Operating Segments \| Radiochemical Products
Segment Reporting Information [Line Items]
Sale of Product	583,541
Depreciation and Amortization	5,014
Segment Income (Loss)	40,520
Expenditures for Segment Assets	0
Segment Assets	320,491
Operating Segments \| Radiochemical Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		613,580
Depreciation and Amortization		1,609
Segment Income (Loss)		118,155
Expenditures for Segment Assets		0
Segment Assets			282,971
Operating Segments \| Cobalt Products
Segment Reporting Information [Line Items]
Sale of Product	327,778
Depreciation and Amortization	4,043
Segment Income (Loss)	184,792
Expenditures for Segment Assets	0
Segment Assets	2,291,891
Operating Segments \| Cobalt Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		219,423
Depreciation and Amortization		9,770
Segment Income (Loss)		120,061
Expenditures for Segment Assets		0
Segment Assets			1,813,356
Operating Segments \| Nuclear Medicine Standards
Segment Reporting Information [Line Items]
Sale of Product	1,002,113
Depreciation and Amortization	17,938
Segment Income (Loss)	223,942
Expenditures for Segment Assets	18,148
Segment Assets	1,960,824
Operating Segments \| Nuclear Medicine Standards \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		808,406
Depreciation and Amortization		2,145
Segment Income (Loss)		183,972
Expenditures for Segment Assets		(198)
Segment Assets			2,214,061
Operating Segments \| Radiological Services
Segment Reporting Information [Line Items]
Sale of Product	887,594
Depreciation and Amortization	12,039
Segment Income (Loss)	402,012
Expenditures for Segment Assets	0
Segment Assets	150,173
Operating Segments \| Radiological Services \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		192,799
Depreciation and Amortization		12,438
Segment Income (Loss)		90,918
Expenditures for Segment Assets		0
Segment Assets			198,437
Operating Segments \| Fluorine Products
Segment Reporting Information [Line Items]
Sale of Product	0
Depreciation and Amortization	26,095
Segment Income (Loss)	(31,299)
Expenditures for Segment Assets	1,560
Segment Assets	5,675,321
Operating Segments \| Fluorine Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		0
Depreciation and Amortization		26,095
Segment Income (Loss)		(84,878)
Expenditures for Segment Assets		4,172
Segment Assets			5,702,159
Corporate Allocation
Segment Reporting Information [Line Items]
Sale of Product	0
Depreciation and Amortization	4,844
Segment Income (Loss)	(785,562)
Expenditures for Segment Assets	0
Segment Assets	$ 2,433,947
Corporate Allocation \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		0
Depreciation and Amortization		3,528
Segment Income (Loss)		(1,214,494)
Expenditures for Segment Assets		$ 0
Segment Assets			$ 1,794,310