Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements Of Comprehensive Loss
Net Loss	$ (6,620,586)	$ (5,889,039)	$ (9,069,994)	$ (11,855,303)
Other Comprehensive Loss:
Foreign currency translation adjustment	(34,261)	(117,798)	(163,860)	(270,157)
Change in unrealized gains on marketable securities, net	13,513	47,568	58,357	48,592
Minimum pension liability adjustment, net	1,669	6,391	7,120	7,166
Total other comprehensive loss	(19,079)	(63,839)	(98,383)	(214,399)
Total comprehensive loss	$ (6,639,665)	$ (5,952,878)	$ (9,168,377)	$ (12,069,702)