Consolidated Statements of Changes in Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2009	$ 464,000	$ 548,044,000	$ (532,899,000)	$ (2,109,000)	$ 13,500,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(1,960,000)	0	(1,960,000)
Balance at Dec. 31, 2010	464,000	548,044,000	(534,859,000)	(2,109,000)	11,540,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	0	0	(1,893,000)	0	(1,893,000)
Stock-based compensation	0	120,000	0	0	120,000
Balance at Dec. 31, 2011	$ 464,000	$ 548,164,000	$ (536,752,000)	$ (2,109,000)	$ 9,767,000