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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jul. 01, 2018	Jun. 30, 2019 USD ($) segment	Jul. 01, 2018 USD ($)	Dec. 30, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Effective income tax rate reconciliation, percent	22.80%	11.40%	22.80%	15.20%
Accumulated depreciation and amortization, property, plant, and equipment	$ 2,500,000		$ 2,500,000		$ 2,100,000
Deposit contracts, assets	3,400,000		3,400,000		2,900,000
Impairment of long-lived assets			$ 0	$ 0
Number of reportable segments | segment			3
Revenue, remaining performance obligation, amount	0		$ 0
Contract with customer, performance obligation satisfied in previous period			0
Capitalized contract cost, gross	0		0
Capitalized contract cost, impairment loss			0
Right-of-use asset - operating leases	3,999,652		3,999,652		$ 0
Operating lease, liability	$ 5,039,176		$ 5,039,176
Minimum
Summary Of Significant Accounting Policies [Line Items]
Lessee, Operating Lease, Renewal Term	3 years		3 years
Useful life			3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Lessee, Operating Lease, Renewal Term	10 years		10 years
Useful life			10 years

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