Supplemental Information to Condensed Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Mar. 31, 2018	Sep. 30, 2018		Sep. 30, 2017
Schedule Of Cash Flow Supplemental [Line Items]
Cash paid for interest				$ 62,773		$ 58,334
Cash paid for income taxes, net of refunds received				42,631		81,271
Noncash investing and financing activities:
Change in accounts payable and accrued expenses for the acquisition of theatre properties and equipment	[1]			7,050		(5,947)
Theatre properties acquired under capital lease				4,035		30,517
Investment in NCM – receipt of common units (see Note 7)			$ 5,012	5,012		18,363
Dividends accrued on unvested restricted stock unit awards				(416)	[2]	$ (423)	[3]
NCM
Noncash investing and financing activities:
Interest expense - NCM (see Note 3)		$ (4,983)		$ (14,875)

[1] Additions to theatre properties and equipment included in accounts payable as of September 30, 2018 and December 31, 2017 were $38,326 and $31,276, respectively.

[2] Below is a summary of dividends paid to stockholders and accrued on unvested restricted stock unit awards during the nine months ended September 30, 2018: Amount per Share Declaration Date Record Date Payable Date of Common Stock Total 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 8/23/2018 9/4/2018 9/18/2018 0.32 37,530 Total $0.96 $112,524

[3] Below is a summary of dividends paid to stockholders and accrued on unvested restricted stock unit awards during the nine months ended September 30, 2017: Amount per Share Declaration Date Record Date Payable Date of Common Stock Total 2/23/2017 3/8/2017 3/20/2017 $0.29 $33,912 5/25/2017 6/8/2017 6/22/2017 0.29 33,904 8/10/2017 8/31/2017 9/13/2017 0.29 33,911 Total $0.87 $101,727