Goodwill (Details)	3 Months Ended
	Apr. 01, 2017 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 14,819,835
Foreign exchange	7,553
Ending balance	14,827,388
Industrial Hardware Segment [Member]
Goodwill [Roll Forward]
Beginning balance	1,760,793
Foreign exchange	7,553
Ending balance	1,768,346
Security Products Segment [Member]
Goodwill [Roll Forward]
Beginning balance	13,059,042
Foreign exchange	0
Ending balance	13,059,042
Metal Products Segment [Member]
Goodwill [Roll Forward]
Beginning balance	0
Foreign exchange	0
Ending balance	$ 0