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Inventories (Tables)
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
Schedule of Inventories

Inventories, consisting of materials, materials overhead, labor, and manufacturing overhead, are stated at the lower of average cost or market (net realizable value) and consist of the following at December 31:

 

    2013     2012  
Raw materials   $ 813,000     $ 807,000  
Work-in-progress     357,700       323,600  
Finished goods     967,600       732,300  
Merchandise     103,700       47,600  
    $ 2,242,000     $ 1,910,500