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Debt (Details) - USD ($) $ in Thousands					3 Months Ended		12 Months Ended
	Jun. 03, 2020	May 05, 2020	Apr. 24, 2020	Jan. 13, 2020	Mar. 31, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument, Redemption [Line Items]
Interest expense					$ 9		$ 25
Debt Instrument, Face Amount		$ 204			$ 3,500
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Debt Instrument, Redemption [Line Items]
Stated interest rate		1.00%			1.00%
Amount received under PPP		$ 535	$ 3,100
Term		2 years
Jack’s Flight Club | Promissory Notes
Debt Instrument, Redemption [Line Items]
Amount of debt forgiven	$ 1,500					$ 1,500
Repayments of debt	6,800
Debt amount remaining	$ 1,700
Interest rate during period	12.00%
Interest expense							$ 142
Jack’s Flight Club
Debt Instrument, Redemption [Line Items]
Promissory note including interest				$ 11,000
Stated interest rate				1.60%

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Business Combination, Consideration Transferred, Promissory Notes Issued, Including Interest

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Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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