Condensed Consolidated Statements of Stockholders Equity (Unaudited) - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2017		$ 28,037	$ 468,969,445	$ (450,852,427)	$ 18,145,055
Balance, shares at Dec. 31, 2017		28,037,501
Stock issued in connection with a public offering
Stock issued in connection with a public offering,shares
Cumulative affect of adopting ASC 606 Adoption				$ 6,701,950	$ 6,701,950
Issuance of stock options/restricted stock and warrants for compensation and services			481,311		481,311
Issuance of stock options/warrants for compensation and services
Issuance of stock options/warrants for compensation and services, shares
Net loss				$ (4,075,574)	$ (4,075,574)
Balance at Mar. 31, 2018		$ 28,037	469,450,756	(448,226,051)	21,252,742
Balance, shares at Mar. 31, 2018		28,037,501
Balance at Dec. 31, 2017		$ 28,037	468,969,445	(450,852,427)	18,145,055
Balance, shares at Dec. 31, 2017		28,037,501
Net loss					(7,085,162)
Balance at Jun. 30, 2018		$ 33,637	476,410,506	(451,235,639)	25,208,504
Balance, shares at Jun. 30, 2018		33,637,501
Balance at Mar. 31, 2018		$ 28,037	469,450,756	(448,226,051)	21,252,742
Balance, shares at Mar. 31, 2018		28,037,501
Stock issued in connection with a public offering		$ 5,600	$ 6,506,551		$ 6,512,151
Stock issued in connection with a public offering,shares		5,600,000
Cumulative affect of adopting ASC 606 Adoption
Issuance of stock options/restricted stock and warrants for compensation and services			453,199		453,199
Issuance of stock options/warrants for compensation and services
Issuance of stock options/warrants for compensation and services, shares
Net loss				$ (3,009,588)	$ (3,009,588)
Balance at Jun. 30, 2018		$ 33,637	476,410,506	(451,235,639)	25,208,504
Balance, shares at Jun. 30, 2018		33,637,501
Balance at Dec. 31, 2018		$ 33,637	477,192,747	(456,864,085)	20,362,299
Balance, shares at Dec. 31, 2018		33,637,501
Stock issued in connection with a public offering
Stock issued in connection with a public offering,shares
Cumulative affect of adopting ASC 606 Adoption
Issuance of stock options/restricted stock and warrants for compensation and services
Issuance of stock options/warrants for compensation and services			$ 210,502		$ 210,502
Issuance of stock options/warrants for compensation and services, shares
Net loss				$ (1,425,495)	$ (1,425,495)
Balance at Mar. 31, 2019		$ 33,637	$ 477,403,249	$ (458,290,073)	$ 19,146,813
Balance, shares at Mar. 31, 2019		33,637,501
Balance at Dec. 31, 2018		$ 33,637	$ 477,192,747	$ (456,864,085)	$ 20,362,299
Balance, shares at Dec. 31, 2018		33,637,501
Net loss					(2,700,483)
Balance at Jun. 30, 2019		$ 33,637	477,617,955	(459,564,568)	18,087,024
Balance, shares at Jun. 30, 2019		33,637,501
Balance at Mar. 31, 2019		$ 33,637	$ 477,403,249	$ (458,290,073)	$ 19,146,813
Balance, shares at Mar. 31, 2019		33,637,501
Stock issued in connection with a public offering
Stock issued in connection with a public offering,shares
Cumulative affect of adopting ASC 606 Adoption
Issuance of stock options/restricted stock and warrants for compensation and services
Issuance of stock options/warrants for compensation and services			$ 214,706		$ 214,706
Issuance of stock options/warrants for compensation and services, shares
Net loss				$ (1,274,495)	$ (1,274,495)
Balance at Jun. 30, 2019		$ 33,637	$ 477,617,955	$ (459,564,568)	$ 18,087,024
Balance, shares at Jun. 30, 2019		33,637,501