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SHAREHOLDERS' EQUITY , WARRANT ACTIVITY (Details) - $ / shares | Apr. 29, 2021 | Mar. 31, 2021 | Mar. 10, 2021 | Dec. 24, 2020 | Apr. 09, 2020
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Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Outstanding |  | 1,611,081 |  |  |
PSP 1 Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Outstanding |  | 928,127 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  | $ 31.61
US Treasury CARES Act Loan [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Outstanding |  | 427,080 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  | $ 31.61
PSP 2 Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Outstanding |  | 255,874 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  | $ 52.25 |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right |  | 255,874 |  |  |
PSP 2 Warrants | Subsequent Event [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | 45,855 |  |  |  |
PSP 3 Warrants |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  | $ 66.39 |  |
PSP 3 Warrants | Subsequent Event [Member] |  |  |  |  |
Class of Warrant or Right [Line Items] |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | 88,395 |  |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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