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Inventories (Schedule Of Inventories) (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Inventories [Abstract]
Finished goods	$ 2,264,409	$ 1,976,050	$ 2,320,692
Production supplies	2,014,097	2,042,611	1,944,159
Raw materials	1,148,209	935,814	1,343,300
Total inventories	$ 5,426,715	$ 4,954,475	$ 5,608,151

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Amount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale.

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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).

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Gross amount of unprocessed items to be consumed in the manufacturing or production process. Also includes purchased parts that will be used as components of a finished product.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

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