Reconciliation of Stockholders' (Deficit) Equity - USD ($)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Deficit Attributable to Internat'l Isotopes Shareholders	Equity Attributable to Noncontrolling Interest	Total
Beginning balance, value at Dec. 31, 2017	$ 4,067,907	$ 120,398,620	$ (125,696,845)	$ (1,230,318)	$ 1,577,245	$ 346,927
Beginning balance, shares at Dec. 31, 2017	406,790,703
Shares issued under employee stock purchase plan, value	$ 771	4,069		4,840		4,840
Shares issued under employee stock purchase plan, shares	77,012
Stock grant, value	$ 2,098	(2,098)
Stock grant, shares	209,825
Stock in lieu of dividends on convertible preferred C shares, value	$ 22,886	183,094		205,980		205,980
Stock in lieu of dividends on convertible preferred C shares, shares	2,288,646
Shares issued for exercise of employee stock options, value	$ 37,649	32,351		70,000		70,000
Shares issued for exercise of employee stock options, shares	3,764,957
Stock based compensation		160,689		160,689		160,689
Net (loss) income			(631,097)	(631,097)	129,229	(501,868)
Ending balance, value at Sep. 30, 2018	$ 4,131,311	120,776,725	(126,327,942)	(1,419,906)	1,706,474	286,568
Ending balance, shares at Sep. 30, 2018	413,131,143
Beginning balance, value at Jun. 30, 2018	$ 4,119,517	120,751,427	(125,994,720)	(1,123,776)	1,660,020	536,244
Beginning balance, shares at Jun. 30, 2018	411,951,724
Shares issued under employee stock purchase plan, value	$ 256	1,279		1,535		1,535
Shares issued under employee stock purchase plan, shares	25,573
Shares issued for exercise of employee stock options, value	$ 11,538	(11,538)
Shares issued for exercise of employee stock options, shares	1,153,846
Stock based compensation		35,557		35,557		35,557
Net (loss) income			(333,222)	(333,222)	46,454	(286,768)
Ending balance, value at Sep. 30, 2018	$ 4,131,311	120,776,725	(126,327,942)	(1,419,906)	1,706,474	286,568
Ending balance, shares at Sep. 30, 2018	413,131,143
Beginning balance, value at Dec. 31, 2018	$ 4,131,683	120,805,997	(126,541,421)	(1,603,741)	1,757,875	154,134
Beginning balance, shares at Dec. 31, 2018	413,168,301
Shares issued under employee stock purchase plan, value	$ 993	4,043		5,036		5,036
Shares issued under employee stock purchase plan, shares	99,372
Stock grant, value	$ 2,798	(2,798)
Stock grant, shares	279,767
Stock in lieu of dividends on convertible preferred C shares, value	$ 34,330	171,650		205,980		205,980
Stock in lieu of dividends on convertible preferred C shares, shares	3,433,000
Shares issued for exercise of employee stock options, value	$ 28,250	55,750		84,000		84,000
Shares issued for exercise of employee stock options, shares	2,825,000
Stock based compensation		113,093		113,093		113,093
Distribution to non-controlling interest					(6,200)	(6,200)
Net (loss) income			(972,689)	(972,689)	314,935	(657,754)
Ending balance, value at Sep. 30, 2019	$ 4,198,054	121,147,735	(127,514,110)	(2,168,321)	2,066,610	(101,711)
Ending balance, shares at Sep. 30, 2019	419,805,440
Beginning balance, value at Jun. 30, 2019	$ 4,197,741	121,125,897	(127,750,572)	(2,426,934)	1,933,946	(492,988)
Beginning balance, shares at Jun. 30, 2019	419,774,105
Shares issued under employee stock purchase plan, value	$ 313	1,285		1,598		1,598
Shares issued under employee stock purchase plan, shares	31,335
Stock based compensation		20,553		20,553		20,553
Net (loss) income			236,462	236,462	132,664	369,126
Ending balance, value at Sep. 30, 2019	$ 4,198,054	$ 121,147,735	$ (127,514,110)	$ (2,168,321)	$ 2,066,610	$ (101,711)
Ending balance, shares at Sep. 30, 2019	419,805,440