Supplemental Information to Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands		3 Months Ended								6 Months Ended
		Jun. 30, 2019		Mar. 31, 2019		Jun. 30, 2018		Mar. 31, 2018	[2]	Jun. 30, 2019	Jun. 30, 2018
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for interest										$ 47,015	$ 51,562
Cash paid for income taxes, net of refunds received										36,831	28,477
Noncash investing and financing activities:
Change in accounts payable and accrued expenses for the acquisition of theatre properties and equipment	[1]									(16,118)	2,898
Investment in NCM – receipt of common units (see Note 8)				$ 1,552						1,552	5,012
Dividends accrued on unvested restricted stock unit awards		$ (189)	[2]	$ (108)	[2]	$ (146)	[2]	$ (125)		(297)	(271)
NCM
Noncash investing and financing activities:
Interest expense - NCM (see Note 8)		$ (4,732)				$ (4,913)				$ (9,514)	$ (9,892)

[1] Additions to theatre properties and equipment included in accounts payable as of June 30, 2019 and December 31, 2018 were $20,886 and $37,004, respectively.

[2] (1) Below is a summary of dividends paid to stockholders and accrued on unvested restricted stock unit awards during the six months ended June 30, 2019 and 2018:             Amount per Share           Declaration Date Record Date Payable Date   of Common Stock     Total   2/22/2019 3/8/2019 3/22/2019   $ 0.34     $ 39,905   5/23/2019 6/8/2019 6/24/2019     0.34       40,012       Total   $ 0.68     $ 79,917                         2/23/2018 3/8/2018 3/22/2018   $ 0.32     $ 37,471   5/25/2018 6/8/2018 6/22/2018     0.32       37,523       Total   $ 0.64     $ 74,994