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INCOME TAXES - (Details) - USD ($) $ in Thousands |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 27, 2020 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020
INCOME TAXES |  |  |  |
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent |  | 21.00% |  |
Effective Income Tax Rate Reconciliation, Percent |  | (4.58%) |  |
Liability for uncertain tax positions |  | $ 0 |  | $ 0
Payroll Protection Payroll (PPP) Program Loan |  |  |  |
INCOME TAXES |  |  |  |
Proceeds from debt | $ 5,051 |  |  |
Forgiveness | $ 4,851 |  |  |
Deferred tax asset, nondeductible expense, PPP loan expenses |  |  | $ 1,276 | $ 1,276

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