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A. Schedule of Product Warranties (Details) (USD $)
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9 Months Ended | 12 Months Ended |
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Sep. 30, 2013
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Dec. 31, 2012
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| Product warranties | ||
| Beginning balance | $ 69,743 | $ 104,423 |
| Warranty claims incurred | (5,926) | (66,278) |
| Provision charged to expense | 21,126 | 31,598 |
| Ending balance | $ 84,943 | $ 69,743 |
| X | ||||||||||
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- Definition
Warranty Expenses Incurred. No definition available.
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| X | ||||||||||
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- Definition
Amount of expense for known and estimated loss on collection of premiums receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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