CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($)	Common Stock	Additional Paid in Capital	Accumulated Deficit	Total
Balance at Sep. 30, 2017	$ 27,377	$ 243,503,858	$ (236,673,155)	$ 6,858,080
Balance (in shares) at Sep. 30, 2017	27,377,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued in public offering, net of offering costs	$ 2,735	4,230,265		4,232,000
Common stock issued in public offering, net of offering costs (in shares)	2,735,000
Stock based compensation expense (benefit)		231,113		231,113
Net loss			(3,183,712)	(3,183,712)
Balance at Dec. 31, 2017	$ 30,112	247,965,236	(239,856,867)	8,138,481
Balance (in shares) at Dec. 31, 2017	30,112,057
Balance at Sep. 30, 2017	$ 27,377	243,503,858	(236,673,155)	6,858,080
Balance (in shares) at Sep. 30, 2017	27,377,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss				(8,217,645)
Balance at Jun. 30, 2018	$ 30,112	247,918,929	(244,890,799)	3,058,242
Balance (in shares) at Jun. 30, 2018	30,112,057
Balance at Dec. 31, 2017	$ 30,112	247,965,236	(239,856,867)	8,138,481
Balance (in shares) at Dec. 31, 2017	30,112,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense (benefit)		(285,045)		(285,045)
Net loss			(2,146,209)	(2,146,209)
Balance at Mar. 31, 2018	$ 30,112	247,680,191	(242,003,076)	5,707,227
Balance (in shares) at Mar. 31, 2018	30,112,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation expense (benefit)		238,738		238,738
Net loss			(2,887,723)	(2,887,723)
Balance at Jun. 30, 2018	$ 30,112	247,918,929	(244,890,799)	3,058,242
Balance (in shares) at Jun. 30, 2018	30,112,057
Balance at Sep. 30, 2018	$ 30,112	249,090,474	(248,366,083)	$ 754,503
Balance (in shares) at Sep. 30, 2018	30,112,057			30,112,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued in public offering, net of offering costs	$ 5,500	2,256,871		$ 2,262,371
Common stock issued in public offering, net of offering costs (in shares)	5,500,000
Impact of adoption of new accounting pronouncements included in accumulated deficit			493,223	493,223
Stock based compensation expense (benefit)		490,244		490,244
Net loss			(3,234,320)	(3,234,320)
Balance at Dec. 31, 2018	$ 35,612	(251,107,180)	251,837,589	766,021
Balance (in shares) at Dec. 31, 2018	35,612,057
Balance at Sep. 30, 2018	$ 30,112	249,090,474	(248,366,083)	$ 754,503
Balance (in shares) at Sep. 30, 2018	30,112,057			30,112,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss				$ (7,398,988)
Balance at Jun. 30, 2019	$ 38,327	253,444,993	(255,271,848)	$ (1,788,528)
Balance (in shares) at Jun. 30, 2019	38,327,057			38,327,057
Balance at Dec. 31, 2018	$ 35,612	(251,107,180)	251,837,589	$ 766,021
Balance (in shares) at Dec. 31, 2018	35,612,057
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued in public offering, net of offering costs	$ 500		200,720	201,220
Common stock issued in public offering, net of offering costs (in shares)	500,000
Exercise of warrants	$ 1,623	716,441		718,064
Exercise of warrants (in shares)	1,623,100
Stock based compensation expense (benefit)		267,094		267,094
Net loss			(2,686,757)	(2,686,757)
Balance at Mar. 31, 2019	$ 37,735	253,021,844	(253,793,937)	(734,358)
Balance (in shares) at Mar. 31, 2019	37,735,157
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants	$ 592	268,845		269,437
Exercise of warrants (in shares)	591,900
Stock based compensation expense (benefit)		154,304		154,304
Net loss			(1,477,911)	(1,477,911)
Balance at Jun. 30, 2019	$ 38,327	$ 253,444,993	$ (255,271,848)	$ (1,788,528)
Balance (in shares) at Jun. 30, 2019	38,327,057			38,327,057