Theatre Acquisitions - Additional Information (Detail) $ in Thousands				3 Months Ended			6 Months Ended		12 Months Ended
	Sep. 26, 2014 USD ($) Screens Theatre	Aug. 22, 2014 Screens Theatre	Aug. 15, 2014 USD ($) States Screens Theatre shares	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) Screens Theatre	Jun. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Business Acquisition [Line Items]
Goodwill changes during period				$ 500	$ (500)
Goodwill recognized				126,115			$ 126,115		$ 125,515
Revenue				219,099		$ 182,987	403,433	$ 341,910
Net Income (Loss)				(1,445)		$ 3,222	(1,054)	$ 58
Pipeline Theatres [Member]
Business Acquisition [Line Items]
Business acquisition, number of theatres acquired | Theatre	2	1
Business acquisition, number of screens acquired | Screens	18	10
Business acquisition cash paid	$ 5,400
Goodwill changes during period									$ 3,250
Digiplex [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 15, 2014
Business acquisition, number of theatres acquired | Theatre			21
Business acquisition, number of screens acquired | Screens			206
Business combination share exchange ratio			0.1765
Notes payable assumed and paid			$ 9,099
Business acquisition, cash paid			10,978
Business acquisition, cash paid held in escrow			$ 181
Business acquisition, share held in escrow | shares			30,000
Goodwill changes during period				500	$ 668
Goodwill recognized			$ 42,662
Identifiable intangible assets recognized			2,190	2,190			2,190
Unfavorable lease obligations			$ 5,980	5,980			$ 5,980
Weighted-average useful life before extension or renewal							6 years 1 month 6 days
Revenue				15,583			$ 28,458
Net Income (Loss)				$ 1,605			$ 2,386
Digiplex [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Business combination share exchange ratio			0.1765
Aggregate common stock | shares			1,382,000
Digiplex [Member] | UNITED STATES
Business Acquisition [Line Items]
Number of states in which acquired business operated | States			9
Digiplex [Member] | Start Media LLC Digiplex LLC (JV) [Member]
Business Acquisition [Line Items]
Percentage interest in joint venture			34.00%
Digiplex [Member] | Pipeline Theatres [Member]
Business Acquisition [Line Items]
Number of theatres agreed to acquire | Theatre							4
Number of screens agreed to acquire | Screens							33
Start Media LLC [Member] | Start Media LLC Digiplex LLC (JV) [Member]
Business Acquisition [Line Items]
Percentage of voting interest in joint venture			66.00%
Business acquisition, cash paid			$ 10,978