Consolidated Statements of Changes in Stockholders' Deficit - USD ($) shares in Thousands	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance, beginning of year and end of year (in shares)	949	12,622
Balance, beginning of year (in shares) at Dec. 31, 2015	949	12,622
Balance, end of year (in shares) at Dec. 31, 2016	949	12,758	(362)
Balance, beginning of year and end of year at Dec. 31, 2015	$ 1,843,000	$ 126,000		$ 56,520,000	$ (59,947,000)
Conversion of preferred stock to common
Balance, end of year at Dec. 31, 2016	$ 1,843,000	$ 128,000		56,595,000	(61,499,000)	$ (107,000)	$ (3,402,000)
Exercise of stock options (in shares)		136					136
Exercise of stock options		$ 2,000		98,000
Balance, beginning of year and end of year (in shares)	949	12,758	(362)
Stock-based compensation				96,000
Preferred stock dividends declared, net of waived penalties by shareholders				(119,000)
Net loss					(1,552,000)		$ (1,552,000)
Balance, beginning of year and end of year (in shares)	949	12,758	(362)
Balance, end of year (in shares) at Dec. 31, 2017	949	12,808	(362)
Conversion of preferred stock to common
Balance, end of year at Dec. 31, 2017	$ 1,843,000	$ 128,000		56,518,000	(61,529,000)	$ (107,000)	$ (3,509,000)
Exercise of stock options (in shares)		50					50
Exercise of stock options				11,000
Balance, beginning of year and end of year (in shares)	949	12,758	(362)
Stock-based compensation				18,000
Preferred stock dividends declared, net of waived penalties by shareholders				$ (106,000)
Net loss					$ (30,000)		$ (30,000)
Balance, beginning of year and end of year (in shares)	949	12,808	(362)