Impact of COVID-19 - Supporting Communities Narrative (Details) $ in Thousands	6 Months Ended
Jun. 30, 2020 USD ($) flights
Unusual or Infrequent Items, or Both [Abstract]
Number of stranded travelers provided flights due to COVID-19	18
Number of flights provided to stranded travelers due to COVID-19 \| flights	140
Flight vouchers pledged to minority organizations due to COVID-19	$ 250

Flight Vouchers Pledged For Minority Organizations Due To COVID-19, Value

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant