Supplemental Information to Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2018		Jun. 30, 2017
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for interest				$ 51,562		$ 49,603
Cash paid for income taxes, net of refunds received				28,477		55,371
Noncash investing and financing activities:
Change in accounts payable and accrued expenses for the acquisition of theatre properties and equipment	[1]			2,898		(4,959)
Theatre properties acquired under capital lease				4,035		7,089
Investment in NCM – receipt of common units (see Note 7)			$ 5,012	5,012		18,363
Dividends accrued on unvested restricted stock unit awards				(271)	[2]	$ (288)	[3]
NCM
Noncash investing and financing activities:
Interest expense - NCM (see Note 3)		$ (4,913)		$ (9,892)

[1] Additions to theatre properties and equipment included in accounts payable as of June 30, 2018 and December 31, 2017 were $34,174 and $31,276, respectively.

[2] The Company’s board of directors declared a cash dividend for the fourth quarter of 2017 in the amount of $0.32 per share of common stock payable to stockholders of record on March 8, 2018. The dividend was paid on March 22, 2018. The Company’s board of directors declared a cash dividend for the first quarter of 2018 in the amount of $0.32 per share of common stock payable to stockholders of record on June 8, 2018. The dividend was paid on June 22, 2018.

[3] The Company’s board of directors declared a cash dividend for the fourth quarter of 2016 in the amount of $0.29 per share of common stock payable to stockholders of record on March 8, 2017. The dividend was paid on March 20, 2017. The Company’s board of directors declared a cash dividend for the first quarter of 2017 in the amount of $0.29 per share of common stock payable to stockholders of record on June 8, 2017. The dividend was paid on June 22, 2017.