Investments in Unconsolidated Affiliates - Summary of Activity in Income from Unconsolidated Affiliates (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Schedule of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates	$ 576	$ (126)	$ 1,924	$ (210)
Screenvision Exhibition, Inc., and Interests in Other Joint Ventures [Member]
Schedule of Equity Method Investments [Line Items]
Income (loss) from unconsolidated affiliates			1,061	(1,192)
Elimination of intercompany revenue			953	982
Income (loss) from unconsolidated affiliates			$ 1,924	$ (210)