Condensed Consolidated Statements of Comprehensive Loss (Unaudited) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements Of Comprehensive Loss
Net Loss	$ (3,568,051)	$ (5,398,176)	$ (12,638,045)	$ (17,253,479)
Other comprehensive loss: Foreign currency translation	(159,351)	(8,548)	(323,211)	(278,705)
Net unrealized gains (losses) on marketable securities	29,677	(21,194)	88,034	27,398
Net minimum pension liability	4,236	(1,151)	11,356	6,015
Total other comprehensive loss	(125,438)	(30,893)	(223,821)	(245,292)
Total comprehensive loss	$ (3,693,489)	$ (5,429,069)	$ (12,861,866)	$ (17,498,771)

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References+ Details

The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the economic entity, including both controlling (parent) and noncontrolling interests. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, including any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent.

+ References+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

- Definition

Amount after tax, before reclassification adjustments, resulting from the process of expressing in the reporting currency of the reporting entity those amounts that are denominated or measured in a different currency, and from transactions whose terms are denominated in a currency other than the entity's functional currency.

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+ Details

- Definition

Net of tax amount of unrealized holding gain (loss) before reclassification adjustments and transfers on available-for-sale securities.

+ References

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+ Details