Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2019

Revenue from Contract with Customer [Abstract]

Summary of Sales from Contracts with Customers Disaggregated by Business Segment and Geography

	Year Ended December 31, 2019									Year Ended December 31, 2018
	U.S.		Outside U.S.		Total Revenues		% of Total Revenues			U.S.		Outside U.S.		Total Revenues		% of Total Revenues
Radiochemical Products	$	2,807,583	$	44,624	$	2,852,207		32	%	$	2,101,597	$	162,410	$	2,264,007		22	%
Cobalt Products		57,077		789,326		846,404		9	%		1,252,253		789,326		2,041,579		20	%
Nuclear Medicine Products		3,066,767		858,536		3,925,303		44	%		3,769,774		19,005		3,788,779		37	%
Radiological Services		1,170,790		—		1,170,790		13	%		1,134,691		1,139,767		2,274,458		22	%
Fluorine Products		160,500		—		160,500		2	%		—		—		—		0	%
	$	7,262,718	$	1,692,486	$	8,955,204		100	%	$	8,258,315	$	2,110,508	$	10,368,823		100	%