Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Stockholders' Equity (Unaudited)

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Underwritten Public Offering [Member] Common Stock [Member]	Underwritten Public Offering [Member] Additional Paid-in Capital [Member]	Underwritten Public Offering [Member]	Private Placement [Member] Common Stock [Member]	Private Placement [Member] Additional Paid-in Capital [Member]	Private Placement [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2017							8,110,332
Balance at Dec. 31, 2017							$ 162,207	$ 331,128,787	$ (319,908,968)	$ (2,396)	$ 668,700	$ 12,048,330
Issued restricted stock (in shares)							10,000
Issued restricted stock							$ 200					200
Stock compensation expense								137,964				137,964
Net income (loss)									(6,737,953)		(9)	(6,737,962)
Unrealized (loss) gain on available-for-sale securities										(176)		(176)
Total comprehensive loss												(6,738,138)
Issued stock to 401(k) plan (in shares)							4,734
Issued stock to 401(k) plan							$ 95	35,885				35,980
Impact of adoption of ASC Topic 606 at Dec. 31, 2017									(700,000)			(700,000)
Issued stock in payment of employee bonuses (in shares)							22,920
Issued stock in payment of employee bonuses							$ 458	164,563				165,021
Balance (in shares) at Mar. 31, 2018							8,147,986
Balance at Mar. 31, 2018							$ 162,960	331,467,199	(327,346,921)	(2,572)	668,691	4,949,357
Balance (in shares) at Dec. 31, 2017							8,110,332
Balance at Dec. 31, 2017							$ 162,207	331,128,787	(319,908,968)	(2,396)	668,700	12,048,330
Net income (loss)												(12,953,928)
Unrealized (loss) gain on available-for-sale securities												1,344
Total comprehensive loss												$ (12,952,584)
Issued stock to 401(k) plan (in shares)												4,734
Issued stock to 401(k) plan												$ 36,000
Impact of adoption of ASC Topic 606 at Dec. 31, 2017									(700,000)			$ (700,000)
Issued stock in payment of employee bonuses (in shares)												55,938
Issued stock in payment of employee bonuses												$ 317,000
Balance (in shares) at Sep. 30, 2018							9,094,535
Balance at Sep. 30, 2018							$ 181,891	334,723,420	(333,562,563)	(1,052)	668,367	2,010,063
Balance (in shares) at Mar. 31, 2018							8,147,986
Balance at Mar. 31, 2018							$ 162,960	331,467,199	(327,346,921)	(2,572)	668,691	4,949,357
Stock compensation expense								79,183				79,183
Net income (loss)									(2,394,041)		(16)	(2,394,057)
Unrealized (loss) gain on available-for-sale securities										508		508
Total comprehensive loss												(2,393,549)
Issued stock in payment of employee bonuses (in shares)							33,018
Issued stock in payment of employee bonuses							$ 660	151,221				151,881
Balance (in shares) at Jun. 30, 2018							8,181,004
Balance at Jun. 30, 2018							$ 163,620	331,697,603	(329,740,962)	(2,064)	668,675	2,786,872
Stock Issued (in shares)				916,031
Stock Issued				$ 18,321	$ 2,981,679	$ 3,000,000
Stock compensation expense								44,088				44,088
Net income (loss)									(3,821,601)		(308)	(3,821,909)
Unrealized (loss) gain on available-for-sale securities										1,012		1,012
Total comprehensive loss												(3,820,897)
Cancelled forfeited restricted stock (in shares)							(2,500)
Cancelled forfeited restricted stock							$ (50)	(50)
Balance (in shares) at Sep. 30, 2018							9,094,535
Balance at Sep. 30, 2018							$ 181,891	334,723,420	(333,562,563)	(1,052)	668,367	2,010,063
Balance (in shares) at Dec. 31, 2018							10,019,535
Balance at Dec. 31, 2018							$ 200,391	338,265,383	(336,722,905)	(730)	668,321	2,410,460
Issued restricted stock (in shares)							15,000
Issued restricted stock							$ 300					300
Stock Issued (in shares)							17,857
Stock Issued							$ 357	49,643				50,000
Stock compensation expense								61,978				61,978
Net income (loss)									(2,429,049)		(12)	(2,429,061)
Unrealized (loss) gain on available-for-sale securities										958		958
Total comprehensive loss												(2,428,103)
Balance (in shares) at Mar. 31, 2019							10,052,392
Balance at Mar. 31, 2019							$ 201,048	338,377,004	(339,151,954)	228	668,309	94,635
Balance (in shares) at Dec. 31, 2018							10,019,535
Balance at Dec. 31, 2018							$ 200,391	338,265,383	(336,722,905)	(730)	668,321	2,410,460
Net income (loss)												(8,176,343)
Unrealized (loss) gain on available-for-sale securities												730
Total comprehensive loss												$ (8,175,613)
Issued stock to 401(k) plan (in shares)												8,128
Issued stock to 401(k) plan												$ 20,000
Balance (in shares) at Sep. 30, 2019							18,059,406
Balance at Sep. 30, 2019							$ 209,056	343,929,129	(344,899,232)		668,304	(92,743)
Balance (in shares) at Mar. 31, 2019							10,052,392
Balance at Mar. 31, 2019							$ 201,048	338,377,004	(339,151,954)	228	668,309	94,635
Stock Issued (in shares)							8,000,000
Stock Issued	$ 8,000	$ 5,158,441	$ 5,166,441
Stock compensation expense								66,159				66,159
Net income (loss)									(2,673,176)		(3)	(2,673,179)
Unrealized (loss) gain on available-for-sale securities										(40)		(40)
Total comprehensive loss												(2,673,219)
Rounding adjustments related to reverse stock split (in shares)							(1,114)
Rounding adjustments related to reverse stock split								(3,385)				(3,385)
Issued stock to 401(k) plan (in shares)							8,128
Issued stock to 401(k) plan							$ 8	19,580				19,588
Value of warrants issued in connection with public offering								261,288				261,288
Balance (in shares) at Jun. 30, 2019							18,059,406
Balance at Jun. 30, 2019							$ 209,056	343,879,087	(341,825,130)	188	668,306	2,931,507
Stock compensation expense								50,042				50,042
Net income (loss)									(3,074,102)		(2)	(3,074,104)
Unrealized (loss) gain on available-for-sale securities										(188)		(188)
Total comprehensive loss												(3,074,292)
Balance (in shares) at Sep. 30, 2019							18,059,406
Balance at Sep. 30, 2019							$ 209,056	$ 343,929,129	$ (344,899,232)		$ 668,304	$ (92,743)