(6) Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loss before income taxes:
Domestic loss	$ (15,356,162)	$ (24,181,349)	$ (19,944,695)
Foreign income	1,158,248	2,021,398	2,143,049
Loss before income taxes	(14,197,914)	(22,159,951)	(17,801,646)
Provision (benefit) for income taxes:
Federal	105,198	94,974	0
State and local	18,747	11,453	145,593
Foreign	745,812	1,262,339	1,353,252
Total	869,757	1,368,766	1,498,845
Deferred:
Federal	14,876	14,876	15,310,413
State and local	981	981	980,137
Foreign	(99,207)	(176,291)	(215,420)
Total	(83,350)	(160,434)	16,075,130
Total provision for income taxes:	$ 786,407	$ 1,208,332	$ 17,573,975