Supplemental Information to Condensed Consolidated Statements of Cash Flows (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Schedule of Cash Flow, Supplemental [Line Items]
Additions to theatre properties and equipment included in accounts payable	$ 7,907	$ 4,685