SHARE-BASED COMPENSATION - Summary of Warrant Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 29, 2019	Dec. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number of warrants, exercisable		93,216
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]
Exercisable warrants, weighted average exercise price (in dollars per share)		$ 11.59
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]
Options converted	38,614
Warrant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in period	423
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number of warrants, outstanding, beginning balance (in shares)	93,216
Number of warrants, exercised (in shares)	1,020
Number of warrants, outstanding, ending balance (in shares)	92,196	93,216
Number of warrants, exercisable	92,196
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward]
Outstanding warrants, weighted average exercise price, beginning balance (in dollars per share)	$ 11.59
Outstanding warrants, weighted average exercise price (in dollars per share)	14.86
Outstanding warrants, weighted average exercise price, ending balance (in dollars per share)	11.56	$ 11.59
Exercisable warrants, weighted average exercise price (in dollars per share)	$ 11.56
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Warrants outstanding, weighted average remaining contractual life	9 months 18 days	1 year 3 months 18 days
Exercisable warrants, weighted average remaining contractual life	9 months 18 days	1 year 3 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward]
Outstanding warrants, intrinsic value, beginning balance	$ 805
Outstanding warrants, intrinsic value, ending balance	703	$ 805
Exercisable warrants, intrinsic price	$ 703	$ 805
Options converted	1,020
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in period	16,694