Investments in Unconsolidated Affiliates - Summary of Activity in Income from Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Equity Method Investments [Line Items]
Income from unconsolidated affiliates	$ 1,039	$ 756	$ 2,963	$ 546
Screenvision Exhibition Inc And Interests In Other Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates			1,551	(923)
Elimination of intercompany revenue			1,412	1,469
Income from unconsolidated affiliates			$ 2,963	$ 546