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Advances on Contracts (Details) (USD $)	12 Months Ended
Advances on Contracts (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Advances on Contracts (Textual) [Abstract]
Advances to contract manufacturer	$ 2,827,446	$ 3,406,506
Utilization period of advance	12 months
Outstanding accounts payable	705,000	1,752,000
Parts operations charged off due to high cost and of producing additional instruments.	$ 135,000

Sum of the carrying values as of the balance sheet date of obligations incurred through that date, including liabilities incurred and payable to vendors for goods and services received, taxes, interest, rent and utilities, compensation costs, payroll taxes and fringe benefits (other than pension and postretirement obligations), contractual rights and obligations, and statutory obligations.

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