Lease Obligations - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating lease right of use asset	$ 16,005		$ 16,005		$ 18,679
Current portion of operating lease liability	5,103		5,103		5,150
Long-term operating lease liability	8,304		8,304		$ 10,877
Cash payments included in the measurement of lease liabilities related to operating leases			2,960	$ 1,761
Operating lease rent expense	$ 1,657	$ 1,307	$ 3,270	$ 2,252
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term of training simulators	12 months		12 months
Operating Lease Remaining Lease	2 months		2 months
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating Lease Remaining Lease	12 years		12 years