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           Inventories (Schedule Of Inventories) (Details) (USD $) 
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           Dec. 31, 2012 
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           Dec. 31, 2011 
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| Inventories [Abstract] | ||
| Finished goods | $ 21,252,143 | $ 14,010,071 | 
| Raw and processed materials | 12,500,567 | 11,975,932 | 
| Total | $ 33,752,710 | $ 25,986,003 | 
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- Details 
          
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- Definition 
          Amount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Carrying amount (lower of cost or market) as of the balance sheet date of inventories less all valuation and other allowances. Excludes noncurrent inventory balances (expected to remain on hand past one year or one operating cycle, if longer). Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          The aggregate carrying amount as of the balance sheet date of items held by the entity which are partially completed at the time of measurement and unprocessed items that will go through the production process and become part of the final product. Includes supplies used directly or indirectly in the manufacturing or production process. This element may be used when the reporting entity combines work in process and raw materials into an aggregate amount. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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