Schedule of Long-Lived Assets by Geographic Area (Parenthetical) (Detail) - USD ($) $ in Thousands		Dec. 31, 2023		Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		$ 530,440	[1]	$ 492,417
Assets held for sale		11,531		0
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		322,445	[1]	328,341
Assets held for sale		11,500
DENMARK
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets		78,100		42,500
Foreign
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	[2]	207,995	[1]	$ 164,076
Assets held for sale		$ 11,500

[1] Includes $11.5 million of long-lived assets classified as assets held for sale. See Note E: “Assets held for sale” for additional information.

[2] As of December 31, 2023 and December 31, 2022, long-lived assets attributable to Denmark were $78.1 million and $42.5 million, respectively.