Supplemental Information to Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Schedule of Cash Flow, Supplemental [Line Items]
Additions to theatre properties and equipment included in accounts payable	$ 11,022	$ 11,154