Summary of Long-Lived Asset Impairment Losses (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Impaired Long Lived Assets Held And Used [Line Items]
Impairment	[1]		$ 16,128
Total impairment		$ 20,845	152,706		$ 57,001
Investment In Ncm [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Total impairment	[2]		(92,655)
Us Operating Segment [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Theatre properties		6,371	12,398		36,005
Theatre operating lease right-of-use assets		6,804	13,216		10,457
Cost method investment		0	2,500		0
Total impairment		13,175	120,769		46,462
Us Operating Segment [Member] | Investment In Ncm [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Investment			92,655	[3]
International Operating Segment [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Theatre properties		4,002	9,951		8,821
Theatre operating lease right-of-use assets		3,210	5,025		1,718
Impairment			16,128	[1]
Intangible assets		458	833
Total impairment		$ 7,670	$ 31,937		$ 10,539

[1] See Note 11 for discussion of impairment evaluations performed during the year ended December 31, 2020.

[2] Recorded in impairment of long-lived and other assets on the consolidated income statement for the year ended December 31, 2020. See further discussion at Fair Value of Investment in NCM below. (3) Excess cash distributions from NCM decreased beginning in the second quarter of 2020 primarily as a result of the impact of the COVID-19 discussed at Note 3. Excess cash distributions will be restricted through December 2023 in accordance with the credit agreement amendment NCM recently entered into with its lenders.

[3] See Note 8 for discussion of investment in NCM.