SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual)	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Apr. 01, 2018 USD ($)	Dec. 31, 2018 USD ($)	Dec. 30, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Effective income tax rate reconciliation, percent	22.80%	22.10%
Accumulated depreciation and amortization, property, plant, and equipment	$ 2,300,000			$ 2,100,000
Deposit contracts, assets	3,300,000			2,900,000
Impairment of long-lived assets	$ 0	$ 0
Number of reportable segments | segment	3
Revenue, remaining performance obligation, amount	$ 0
Contract with customer, performance obligation satisfied in previous period	0
Capitalized contract cost, gross	0
Capitalized contract cost, impairment loss	0
Right-of-use asset - operating leases	3,924,340			$ 0
Operating lease, liability	$ 5,006,903
Minimum
Summary Of Significant Accounting Policies [Line Items]
Lessee, Operating Lease, Renewal Term	3 years
Useful life	3 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Lessee, Operating Lease, Renewal Term	10 years
Useful life	10 years
Accounting Standards Update 2016-02
Summary Of Significant Accounting Policies [Line Items]
Right-of-use asset - operating leases			$ 4,100,000
Operating lease, liability			$ 4,300,000