Consolidated Statements of Shareholders Equity (USD $)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Treasury Stock	Accumulated Other Comprehensive (Loss)	Total Stockholders Equity	Comprehensive Income (Loss)
Beginning Balance, amount at Dec. 31, 2008	$ 51,970	$ 132,998,230	$ (24,089,189)	$ (42,928,328)	$ (956,331)	$ 65,076,352	$ 768,401
Exercise of stock awards	419	35,101				35,520
Net effects of tax shortfalls from stock-based award activity		(133,970)				(133,970)
Share-based compensation to non-employees		275,480				275,480
Share-based compensation to employees		8,551,961				8,551,961
Net Loss			(3,092,705)			(3,092,705)	(3,092,705)
Acquisition of treasury stock				(3,988,011)		(3,988,011)
Minimum pension liability adjustment, net					(50,850)	(50,850)	(50,850)
Change in unrealized gains / losses on marketable securities, net					24,031	24,031	24,031
Foreign currency translation adjustment					(544,894)	(544,894)	(544,894)
Ending Balance, amount at Dec. 31, 2009	52,389	141,726,802	(27,181,894)	(46,916,339)	(1,528,044)	66,152,914	(3,664,418)
Exercise of stock awards	1,758	408,131				409,889
Net effects of tax shortfalls from stock-based award activity		63,682				63,682
Share-based compensation to non-employees		819,185				819,185
Share-based compensation to employees		7,866,384				7,866,384
Net Loss			(35,375,621)			(35,375,621)	(35,375,621)
Minimum pension liability adjustment, net					(59,655)	(59,655)	(59,655)
Change in unrealized gains / losses on marketable securities, net					137,172	137,172	137,172
Foreign currency translation adjustment					(75,087)	(75,087)	(75,087)
Ending Balance, amount at Dec. 31, 2010	54,147	150,884,184	(62,557,515)	(46,916,339)	(1,525,614)	39,938,863	(35,373,191)
Exercise of stock awards	784	919,322				920,106
Share-based compensation to non-employees		24,369				24,369
Share-based compensation to employees		5,493,689				5,493,689
Net Loss			(23,368,283)			(23,368,283)	(23,368,283)
Minimum pension liability adjustment, net					67,891	67,891	67,891
Change in unrealized gains / losses on marketable securities, net					20,201	20,201	20,201
Foreign currency translation adjustment					(279,898)	(279,898)	(279,898)
Ending Balance, amount at Dec. 31, 2011	$ 54,931	$ 157,321,564	$ (85,925,798)	$ (46,916,339)	$ (1,717,420)	$ 22,816,938	$ (23,560,089)