INTANGIBLES (Details) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Amortization expense fiscal year maturity [Abstract]
2020	$ 4,082,000
2021	4,062,000
2022	4,055,000
2023	4,055,000
2024	3,372,000
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	31,811,951	$ 15,089,550
Accumulated Amortization	5,351,841	4,807,830
Net per Balance Sheet	$ 26,460,110	$ 10,281,720
Weighted-Average Amortization Period	9 years 6 months	9 years 2 months 12 days
Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 28,286,680	$ 11,534,498
Accumulated Amortization	3,257,122	3,087,130
Net per Balance Sheet	25,029,558	8,447,368
Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	3,525,271	3,555,052
Accumulated Amortization	2,094,719	1,720,700
Net per Balance Sheet	1,430,552	1,834,352
Metal Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	0	0
Accumulated Amortization	0	0
Net per Balance Sheet	0	0
Patents and Developed Technology [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	6,994,630	9,533,229
Accumulated Amortization	$ 2,294,153	$ 3,185,656
Weighted-Average Amortization Period	10 years 2 months 12 days	10 years 2 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	$ 5,375,680	$ 7,884,498
Accumulated Amortization	1,505,097	2,448,380
Patents and Developed Technology [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	1,618,950	1,648,731
Accumulated Amortization	789,056	737,276
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	24,038,381	4,789,381
Accumulated Amortization	$ 2,332,487	$ 1,046,983
Weighted-Average Amortization Period	9 years 7 months 6 days	8 years 1 month 6 days
Customer Relationships [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 22,899,000	$ 3,650,000
Accumulated Amortization	1,751,225	638,750
Customer Relationships [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	1,139,381	1,139,381
Accumulated Amortization	581,262	408,233
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	471,570	459,570
Accumulated Amortization	$ 417,832	$ 329,296
Weighted-Average Amortization Period	1 year 10 months 24 days	4 years 4 months 24 days
Non-Compete Agreements [Member] | Industrial Hardware Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	$ 12,000	$ 0
Accumulated Amortization	800	0
Non-Compete Agreements [Member] | Security Products Segment [Member]
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract]
Gross Amount	459,570	459,570
Accumulated Amortization	417,032	329,296
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	$ 307,369	$ 245,895
Weighted-Average Amortization Period	2 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	307,369	245,895
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