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Other Assets (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Summary Other assets
Prepaid royalties	$ 614,488	$ 698,922
Security deposit (buildings and equipment lease)	332,813	1,157,135
Total other non-current assets	$ 947,301	$ 1,856,057

Carrying amount as of the balance sheet date of amounts paid for royalties in advance of when the expense is to be recognized, which will occur within one year or in the normal operating cycle, if longer.

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