Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
Beginning balance at Dec. 31, 2016		$ 1,000	$ 78,525,900	$ (82,449,800)	$ (3,922,900)
Beginning balance, shares at Dec. 31, 2016		9,804,400
Stock-based compensation expense			14,500		14,500
Issuance of new warrants and settlement of liquidated damage
Net income / (loss)				87,400	87,400
Ending balance at Sep. 30, 2017		$ 1,000	78,540,400	(82,362,400)	(3,821,000)
Ending balance, shares at Sep. 30, 2017		9,804,400
Beginning balance at Dec. 31, 2017		$ 1,000	78,539,300	(81,849,200)	(3,308,900)
Beginning balance, shares at Dec. 31, 2017		9,804,400
Stock-based compensation expense
Issuance of new warrants and settlement of liquidated damage			699,400		699,400
Cumulative effect from change of accounting principle				1,391,900	1,391,900
Net income / (loss)				92,700	92,700
Ending balance at Sep. 30, 2018		$ 1,000	$ 79,238,700	$ (80,364,600)	$ (1,124,900)
Ending balance, shares at Sep. 30, 2018		9,804,400