Segment Information - Schedule of Segment Reporting Information by Segment (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Sale of Product	$ 10,368,823	$ 7,420,390
Depreciation and Amortization	267,719
Segment Income (Loss)	(844,576)	(3,757,284)
Expenditures for Segment Assets	86,320
Segment Assets	12,990,076	12,005,294
As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		7,420,390
Depreciation and Amortization		241,436
Segment Income (Loss)		(3,757,284)
Expenditures for Segment Assets		110,115
Segment Assets		12,005,294
Operating Segments
Segment Reporting Information [Line Items]
Sale of Product	10,368,823
Depreciation and Amortization	257,944
Segment Income (Loss)	2,488,888
Expenditures for Segment Assets	86,320
Segment Assets	10,942,023
Operating Segments \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		7,420,390
Depreciation and Amortization		235,282
Segment Income (Loss)		1,596,648
Expenditures for Segment Assets		71,303
Segment Assets		10,210,984
Operating Segments \| Radiochemical Products
Segment Reporting Information [Line Items]
Sale of Product	2,264,007
Depreciation and Amortization	27,015
Segment Income (Loss)	289,773
Expenditures for Segment Assets	62,130
Segment Assets	344,994
Operating Segments \| Radiochemical Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		2,321,732
Depreciation and Amortization		8,015
Segment Income (Loss)		402,158
Expenditures for Segment Assets		40,863
Segment Assets		282,971
Operating Segments \| Cobalt Products
Segment Reporting Information [Line Items]
Sale of Product	2,041,579
Depreciation and Amortization	6,839
Segment Income (Loss)	523,795
Expenditures for Segment Assets	0
Segment Assets	2,611,939
Operating Segments \| Cobalt Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		507,904
Depreciation and Amortization		35,790
Segment Income (Loss)		229,954
Expenditures for Segment Assets		0
Segment Assets		1,813,356
Operating Segments \| Nuclear Medicine Standards
Segment Reporting Information [Line Items]
Sale of Product	3,788,779
Depreciation and Amortization	66,272
Segment Income (Loss)	675,367
Expenditures for Segment Assets	22,630
Segment Assets	2,113,960
Operating Segments \| Nuclear Medicine Standards \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		3,232,229
Depreciation and Amortization		27,932
Segment Income (Loss)		627,832
Expenditures for Segment Assets		2,940
Segment Assets		2,214,061
Operating Segments \| Radiological Services
Segment Reporting Information [Line Items]
Sale of Product	2,274,458
Depreciation and Amortization	44,152
Segment Income (Loss)	1,122,604
Expenditures for Segment Assets	0
Segment Assets	281,077
Operating Segments \| Radiological Services \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		1,358,525
Depreciation and Amortization		49,854
Segment Income (Loss)		545,814
Expenditures for Segment Assets		13,277
Segment Assets		198,437
Operating Segments \| Fluorine Products
Segment Reporting Information [Line Items]
Sale of Product	0
Depreciation and Amortization	113,666
Segment Income (Loss)	(122,651)
Expenditures for Segment Assets	1,560
Segment Assets	5,590,053
Operating Segments \| Fluorine Products \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		0
Depreciation and Amortization		113,691
Segment Income (Loss)		(209,110)
Expenditures for Segment Assets		14,223
Segment Assets		5,702,159
Corporate Allocation
Segment Reporting Information [Line Items]
Sale of Product	0
Depreciation and Amortization	9,775
Segment Income (Loss)	(3,333,464)
Expenditures for Segment Assets	0
Segment Assets	$ 2,048,053
Corporate Allocation \| As Adjusted
Segment Reporting Information [Line Items]
Sale of Product		0
Depreciation and Amortization		6,154
Segment Income (Loss)		(5,353,932)
Expenditures for Segment Assets		38,812
Segment Assets		$ 1,794,310

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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