CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Comprehensive Income [Abstract]
Net Loss	$ (2,219,663)	$ (3,568,051)	$ (11,807,401)	$ (12,638,045)
Other comprehensive income (loss), net of taxes (benefits):
Foreign currency translation	(932)	(159,351)	13,858	(323,211)
Net unrealized gains on marketable securities	(2,307)	29,677	(3,757)	88,034
Net minimum pension liability	2,965	4,236	2,019	11,356
Total other comprehensive income (loss), net of taxes (benefits):	(274)	(125,438)	12,120	(223,821)
Total comprehensive loss, net	(2,219,937)	(3,693,489)	(11,795,281)	(12,861,866)
Less: Accrual of preferred stock dividends	28,875	0	28,875	0
Less: Accretion to redemption value of Series A preferred stock	17,061	0	17,061	0
Total comprehensive loss, net attributable to common stockholders	$ (2,265,873)	$ (3,693,489)	$ (11,841,217)	$ (12,861,866)