Inventories (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Current inventories
Raw materials	$ 2,223,978	$ 1,919,250
Work in process	4,176,764	4,991,032
Finished goods	8,004,314	7,350,332
Inventory, Gross	14,405,056	14,260,614
Reserve	(1,176,673)	(1,119,193)
Current inventories, total	13,228,383	13,141,421
Non-current inventories
Finished goods	1,238,225	1,238,225
Non-current inventories, total	1,238,225	1,238,225
Total inventories	$ 14,466,608	$ 14,379,646