Long-Lived Asset Impairment Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of long-lived assets	$ 12,494	$ 2,788	$ 18,078	$ 3,379
U.S. Operating Segment
Impaired Long-Lived Assets Held and Used [Line Items]
Theatre properties and equipment	1,044	1,187	2,252	1,778
Operating lease right-of-use assets	8,047		8,047
International Operating Segment
Impaired Long-Lived Assets Held and Used [Line Items]
Theatre properties and equipment	1,775	$ 1,601	6,151	$ 1,601
Operating lease right-of-use assets	$ 1,628		$ 1,628