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Goodwill (Tables)
 6 Months Ended
Jun. 30, 2012
Goodwill [Abstract]  
Roll-forward of goodwill
The following is a roll-forward of goodwill from year-end 2012 to the end of the second quarter 2013:

   
Industrial
Hardware
Segment
 
Security
Products
Segment
 
Metal
Products
Segment
 
 
 
Total
 
                           
Beginning balance
 
$
2,099,783
 
$
11,833,816
 
$
—
 
$
13,933,599
 
Foreign exchange
   
 (66,287
)
 
 —
   
—
   
 (66,287
)
Ending balance
 
$
2,033,496
 
$
11,833,816
 
$
—
 
$
13,867,312