Inventories (Schedule Of Inventories) (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Inventories [Abstract]
Finished goods	$ 2,162,292	$ 1,976,050	$ 1,325,523
Production supplies	2,188,111	2,042,611	2,163,203
Raw materials	1,219,484	935,814	2,291,200
Total inventories	$ 5,569,887	$ 4,954,475	$ 5,779,926