SHAREHOLDERS' EQUITY , WARRANT ACTIVITY (Details) - $ / shares	Apr. 29, 2021	Mar. 31, 2021	Mar. 10, 2021	Dec. 24, 2020	Apr. 09, 2020
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