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Inventories
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventories

3. 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:

 

    2015     2014  
Raw materials   $ 628,100     $ 740,300  
Work-in-progress     312,200       259,400  
Finished goods     541,400       1,034,200  
Merchandise     65,300       84,000  
    $ 1,547,000     $ 2,117,900