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LONG-TERM DEBT (Financed Insurance Loan) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jul. 31, 2020 | Dec. 31, 2019 | Jul. 31, 2019 | Jul. 31, 2018
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Total debt | $ 1,010 |  | $ 519 |  |
Financed Insurance Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  | $ 100 |  | $ 400 | $ 400
Interest rate (as a percent) |  | 5.00% |  | 5.00% | 4.89%
Total debt | 12 |  | 260 |  |
Minimum | Financed Insurance Loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Total debt | $ 100 |  | $ 300 |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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