OBLIGATIONS - Schedule of Capital Leases (Parenthetical) (Details) - Software	12 Months Ended
	Dec. 30, 2018	Dec. 31, 2017
Capital lease obligation, leased July 2018
Debt Instrument [Line Items]
Capital lease term	3 years
Imputed interest rate	7.64%
Capital lease obligation, leased December 2017, one
Debt Instrument [Line Items]
Capital lease term	3 years	3 years
Imputed interest rate	6.48%	6.48%
Capital lease obligation, leased December 2017, two
Debt Instrument [Line Items]
Capital lease term	2 years	2 years
Imputed interest rate	6.30%	6.30%
Capital lease obligation, leased May 2017
Debt Instrument [Line Items]
Capital lease term	3 years	3 years
Imputed interest rate	5.48%	5.48%
Capital lease obligation, leased February 2017
Debt Instrument [Line Items]
Capital lease term	3 years	3 years
Imputed interest rate	5.57%	5.57%