Intangibles (Details) (USD $)	3 Months Ended	12 Months Ended
	Apr. 04, 2015	Jan. 03, 2015
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 4,624,509	$ 4,683,640
Accumulated Amortization	2,226,068	2,185,070
Net as per Balance Sheet	2,398,441	2,498,570
Weighted Average Amortization Period	12 years 8 months 12 days	12 years 8 months 12 days
Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	2,431,010	2,294,261
Accumulated Amortization	1,617,196	1,649,655
Net as per Balance Sheet	813,814	844,606
Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	2,193,499	2,189,379
Accumulated Amortization	608,872	535,415
Net as per Balance Sheet	1,584,627	1,653,964
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	3,460,433	3,519,564
Accumulated Amortization	2,167,864	2,185,070
Weighted Average Amortization Period	15 years 8 months 12 days	15 years 8 months 12 days
Patents and developed technology [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	2,431,010	2,494,261
Accumulated Amortization	1,617,196	1,649,655
Patents and developed technology [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	1,029,423	1,025,303
Accumulated Amortization	550,668	535,415
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	22,485	0
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	22,485	0
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	20,350	0
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	20,350	0
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	15,369	0
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	15,369	0
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