Intangibles (Details) - USD ($)		6 Months Ended
	Jan. 02, 2016	Jul. 02, 2016
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 4,400,109	$ 4,419,969
Accumulated Amortization	2,286,533	2,469,222
Net as per Balance Sheet	$ 2,113,576	$ 1,950,747
Weighted Average Amortization Period	12 years 7 months 6 days	12 years 7 months 6 days
Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 2,206,852	$ 2,207,820
Accumulated Amortization	1,478,692	1,514,647
Net as per Balance Sheet	728,160	693,173
Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	2,193,257	2,212,149
Accumulated Amortization	807,841	954,575
Net as per Balance Sheet	1,385,416	1,257,574
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	3,236,033	3,255,893
Accumulated Amortization	$ 2,053,718	$ 2,119,999
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	$ 2,206,852	$ 2,207,820
Accumulated Amortization	1,478,692	1,514,647
Patents and Developed Technology [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	1,029,181	1,048,073
Accumulated Amortization	575,026	605,352
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	$ 89,941	$ 134,912
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	89,941	134,912
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	$ 81,400	$ 122,100
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	81,400	122,100
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	$ 61,474	$ 92,211
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	61,474	92,211
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