DEBT - Borrowings Under Revolving Facility (Details) - Credit Agreement - Texas Capital Bank, National Association (TCB) - Revolving Credit Facility - USD ($)	Mar. 31, 2019	Dec. 30, 2018
Line of Credit Facility [Line Items]
Initial borrowing amount	$ 3,016,558	$ 650,289
Debt Instrument, Interest Rate, Effective Percentage for Initial Borrowing Amount	6.50%	6.50%
Second borrowing amount	$ 4,000,000	$ 5,000,000
Debt Instrument, Interest Rate, Effective Percentage for Second Borrowing Amount	5.23%	5.16%
Third borrowing amount	$ 3,500,000	$ 5,000,000
Debt Instrument, Interest Rate, Effective Percentage for Third Borrowing Amount	5.24%	5.16%
Total borrowing amount	$ 10,516,558	$ 10,650,289