Segment Information (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Sale of Product	$ 2,042,949	$ 2,614,744	$ 3,992,292	$ 5,028,059
Depreciation and Amortization			203,591	213,226
Segment Income (Loss)	(515,132)	(1,670,186)	(1,105,379)	(3,385,198)
Segment Assets	11,065,208		11,065,208		11,930,805
Radiochemical Products
Sale of Product	405,118	475,901	787,033	917,201
Depreciation and Amortization	9,294	9,155	18,587	18,308
Segment Income (Loss)	22,232	54,459	18,257	89,854
Expenditures for Segment Assets	0	0	2,793	0
Segment Assets	209,283		209,283		196,065
Cobalt Products
Sale of Product	484,098	821,409	833,430	1,234,244
Depreciation and Amortization	23,766	27,401	46,846	54,769
Segment Income (Loss)	146,267	392,070	251,601	623,579
Expenditures for Segment Assets	23,181	1,965	31,742	1,965
Segment Assets	1,751,816		1,751,816		1,586,748
Nuclear Medicine Standards
Sale of Product	1,074,124	1,186,399	2,202,129	2,579,556
Depreciation and Amortization	6,585	3,090	10,720	5,954
Segment Income (Loss)	157,943	195,051	321,844	399,964
Expenditures for Segment Assets	823	44,759	823	83,065
Segment Assets	467,201		467,201		1,019,239
Radiological Services
Sale of Product	40,593	57,635	65,883	134,250
Depreciation and Amortization	2,600	2,600	5,200	5,200
Segment Income (Loss)	33,641	30,655	33,367	83,560
Expenditures for Segment Assets	0	0	0	0
Segment Assets	8,698		8,698		19,646
Fluorine Products
Sale of Product	0	0	0	0
Depreciation and Amortization	35,845	48,483	103,303	88,045
Segment Income (Loss)	(307,358)	(1,701,456)	(558,477)	(3,292,659)
Expenditures for Segment Assets	455,639	19,865	1,131,756	37,161
Segment Assets	5,930,078		5,930,078		4,922,409
Transportation
Sale of Product	39,016	73,400	103,817	162,808
Depreciation and Amortization	3,351	3,395	6,746	7,018
Segment Income (Loss)	(22,939)	13,184	24,702	23,465
Expenditures for Segment Assets	0	0	0	0
Segment Assets	32,866		32,866		39,112
Segment Total
Sale of Product	2,042,949	2,614,744	3,992,292	5,028,059
Depreciation and Amortization	81,441	94,124	191,402	179,294
Segment Income (Loss)	29,786	(1,016,037)	41,890	(2,072,237)
Expenditures for Segment Assets	479,643	66,589	1,167,114	140,238
Segment Assets	8,399,942		8,399,942		7,783,219
Corporate Allocation
Sale of Product	0	0	0	0
Depreciation and Amortization	10,800	17,039	12,189	33,932
Segment Income (Loss)	(544,918)	(654,149)	(1,147,269)	(1,312,961)
Expenditures for Segment Assets	0	0	3,414	9,831
Segment Assets	2,665,266		2,665,266		4,147,586
Consolidated Total
Sale of Product	2,042,949	2,614,744	3,992,292	5,028,059
Depreciation and Amortization	92,241	111,163	203,591	213,226
Segment Income (Loss)	(515,132)	(1,670,186)	(1,105,379)	(3,385,198)
Expenditures for Segment Assets	479,643	66,589	1,170,528	150,069
Segment Assets	$ 11,065,208		$ 11,065,208		$ 11,930,805