Debt - Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2025	Sep. 30, 2022	Dec. 31, 2019	Feb. 24, 2018	Jul. 31, 2003
Aggregate principal amount				$ 70,000
Operating lease right of use asset	$ 13,480	$ 13,480	$ 18,679
Gain (Loss) on Extinguishment of Debt		53	10,363
Hangar [Member]
Operating lease right of use asset	2,547	$ 2,547	$ 2,778
Aircraft Notes [Member]
Aggregate principal amount						$ 70,000	$ 70,000
Gain (Loss) on Extinguishment of Debt	$ 53
City of Milwaukee, Wisconsin variable rate Industrial Development Bonds [Member]
Aggregate principal amount								$ 4,275
Notes Due December Thirty One Two Thousand And Twenty Five Prepaid [Member]
Aggregate principal amount					$ 400