Intangibles (Details) - USD ($)	9 Months Ended	12 Months Ended
	Oct. 01, 2016	Jan. 02, 2016
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 4,409,019	$ 4,400,109
Accumulated Amortization	2,542,039	2,286,533
Net as per Balance Sheet	$ 1,866,980	$ 2,113,576
Weighted Average Amortization Period	12 years 6 months	12 years 7 months 6 days
Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 2,176,425	$ 2,206,852
Accumulated Amortization	1,513,977	1,478,692
Net as per Balance Sheet	662,448	728,160
Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	2,232,594	2,193,257
Accumulated Amortization	1,028,062	807,841
Net as per Balance Sheet	1,204,532	1,385,416
Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	0	0
Net as per Balance Sheet	0	0
Patents and Developed Technology [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	3,244,943	3,236,033
Accumulated Amortization	$ 2,134,612	$ 2,053,718
Weighted Average Amortization Period	15 years 10 months 24 days	15 years 10 months 24 days
Patents and Developed Technology [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 2,176,425	$ 2,206,852
Accumulated Amortization	1,513,977	1,478,692
Patents and Developed Technology [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	1,068,518	1,029,181
Accumulated Amortization	620,635	575,026
Patents and Developed Technology [Member] | Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	0	0
Customer Relationships [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	449,706	449,706
Accumulated Amortization	$ 157,397	$ 89,941
Weighted Average Amortization Period	5 years	5 years
Customer Relationships [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 0	$ 0
Accumulated Amortization	0	0
Customer Relationships [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	449,706	449,706
Accumulated Amortization	157,397	89,941
Customer Relationships [Member] | Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	0	0
Non-compete Agreements [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	407,000	407,000
Accumulated Amortization	$ 142,450	$ 81,400
Weighted Average Amortization Period	5 years	5 years
Non-compete Agreements [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 0	$ 0
Accumulated Amortization	0	0
Non-compete Agreements [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	407,000	407,000
Accumulated Amortization	142,450	81,400
Non-compete Agreements [Member] | Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	0	0
Intellectual Property [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	307,370	307,370
Accumulated Amortization	$ 107,580	$ 61,474
Weighted Average Amortization Period	5 years	5 years
Intellectual Property [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 0	$ 0
Accumulated Amortization	0	0
Intellectual Property [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	307,370	307,370
Accumulated Amortization	107,580	61,474
Intellectual Property [Member] | Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	$ 0	$ 0