DEBT (Textuals) (Details) - USD ($)			3 Months Ended
	Dec. 27, 2018	Oct. 27, 2017	Mar. 31, 2019	Dec. 31, 2018
Line of Credit Facility [Line Items]
Short-term debt, outstanding balance			$ 26,522,000	$ 21,975,000
Revolving Credit Facility
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			50,000,000
Remaining borrowing capacity			8,820,000
Additional borrowing capacity			70,000,000
Incremental borrowing amount			$ 5,000,000
Borrowing base, as percentage of eligible accounts receivables less reserves			95.00%
Line of credit outstanding			$ 5,000,000
Gross amount factored			1,550,000
Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			31,220,000
Term loan
Line of Credit Facility [Line Items]
Face amount of debt		$ 140,000,000
Debt term		5 years
Debt issuance costs, net			7,300,000
Unamortized debt issuance costs			$ 5,200,000
Term loan | London Interbank Offered Rate (LIBOR)
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)		4.50%
Term loan | London Interbank Offered Rate (LIBOR) | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)		3.75%	1.50%
Term loan | London Interbank Offered Rate (LIBOR) | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)		4.50%	1.75%
Secured Debt
Line of Credit Facility [Line Items]
Face amount of debt	$ 1,650,000.00
Stated percentage	7.568%
Amortization period	2 years 6 months
Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 33,600,000
Short-term debt, outstanding balance			$ 26,500,000
Line of Credit | Minimum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			3.00%
Line of Credit | Maximum
Line of Credit Facility [Line Items]
Basis spread on variable rate (as percent)			4.50%