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SHARE-BASED COMPENSATION - Summary of Warrant Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 29, 2020 | Sep. 27, 2020 | Sep. 29, 2019 | Dec. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] |  |  |  |
Number of warrants, exercisable |  |  |  | 64,482
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average Exercise Price [Roll Forward] |  |  |  |
Forfeited, weighted average exercise price, (in dollars per share) |  | $ 11.85 |  |
Exercisable warrants, weighted average exercise price (in dollars per share) |  |  |  | $ 13.84
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) | 64,482 | 64,482 |  |
Forfeited (in shares) |  | (38,620) |  |
Number of warrants, outstanding, ending balance (in shares) |  | 25,862 |  |
Number of warrants, exercisable |  | 25,862 |  |
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) | $ 13.84 | $ 13.84 |  |
Outstanding warrants, weighted average exercise price, ending balance (in dollars per share) |  | 16.80 |  |
Exercisable warrants, weighted average exercise price (in dollars per share) |  | $ 16.80 |  |
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 | 8 months 12 days |  |
Exercisable warrants, weighted average remaining contractual life | 9 months 18 days | 8 months 12 days |  |
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Intrinsic Value [Roll Forward] |  |  |  |
Outstanding warrants, intrinsic value, beginning balance | $ 473 | $ 473 |  |
Outstanding warrants, intrinsic value, ending balance |  | 0 |  |
Exercisable warrants, intrinsic price |  | $ 0 |  | $ 473
Options converted |  |  | 1,020 |
Employee Stock Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares issued in period |  |  | 16,694 |

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- Definition The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4332-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4313-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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