Theatre Acquisitions - Summary of the Preliminary Purchase Price (Detail) $ / shares in Units, $ in Thousands	Aug. 15, 2014 USD ($) $ / shares shares	Sep. 30, 2015 shares	Dec. 31, 2014 shares
Business Acquisition [Line Items]
Number of shares of Digiplex common stock outstanding at August 15, 2014 | shares		24,577,932	24,420,032
Digiplex [Member]
Business Acquisition [Line Items]
Number of shares of Digiplex common stock outstanding at August 15, 2014 | shares	7,832,000
Exchange ratio	0.1765
Estimated fair value of 1.4 million common shares issued per merger agreement	$ 47,274
Cash settlement of Start Media joint venture	10,978
Cash settlement of shares held in escrow	181
Total preliminary estimated acquisition consideration	$ 58,433
Digiplex [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Exchange ratio	0.1765
Number of shares of Carmike common stock—as exchanged | shares	1,382,000
Carmike common stock price on August 15, 2014 | $ / shares	$ 34.20