Screenvision Exhibition, Inc. - Additional Information (Detail) - USD ($) $ in Thousands		1 Months Ended			3 Months Ended		9 Months Ended
	Oct. 14, 2010	May 31, 2016	Sep. 30, 2011	Jan. 31, 2011	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Carrying value of ownership interest in SV Holdco					$ 9,417		$ 9,417		$ 8,033
Concessions and other revenue					83,742	$ 69,608	249,748	$ 226,699
Amounts due included in accounts receivable related to Screenvision					8,976		8,976		$ 16,207
Class C Membership Units [Member]
Schedule of Equity Method Investments [Line Items]
Threshold amount applicable for future profits and appreciation in assets	$ 85,000				$ 88,000		$ 88,000
Maximum forfeiture limit							25.00%
Maximum bonus units to be received							33.00%
Screenvision Exhibition, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Exhibition agreement, expiration date	Jul. 01, 2012
Modified Exhibition Agreement, additional term	30 years
Modified Exhibition Agreement, expiration date	Jul. 01, 2042
Cash received on Modified Exhibition Agreement				$ 30,000
Recognized concessions and other revenue received	$ 30,000
Non-forfeitable Class C and Class A membership units					19.00%		19.00%		14.00%
Non-forfeitable ownership interest at estimated fair value	6,555
Aggregate amount deferred to be recognized as concessions and other revenue	$ 36,555
Concessions and other revenue					$ 3,100	2,602	$ 8,338	8,003
Intercompany gain to Company					547	$ 459	1,471	$ 1,412
Amounts due included in accounts receivable related to Screenvision					1,964		1,964		$ 1,626
SV Holdco, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Recognized concessions and other revenue received		$ 2,047
Carrying value of ownership interest in SV Holdco					8,494		8,494		$ 6,957
SV Holdco, LLC [Member] | Member Units [Member]
Schedule of Equity Method Investments [Line Items]
Carrying value of ownership interest in SV Holdco					$ 8,494		$ 8,494
SV Holdco, LLC [Member] | Class C Membership Units [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of issued and outstanding membership units received	20.00%
SV Holdco, LLC [Member] | Class A Membership Units [Member]
Schedule of Equity Method Investments [Line Items]
Voluntary capital contribution made to SV Holdco			$ 718
SV Holdco, LLC [Member] | Class A Membership Units [Member] | Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Percentage of issued and outstanding membership units received			1.00%