INVESTMENTS (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) item	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) $ / shares shares	Mar. 31, 2015 $ / shares shares	Dec. 31, 2014 USD ($)	Aug. 30, 2012 shares
Investments
The Company's recorded equity in earnings	$ 10,850,000	$ 13,087,000	$ 21,536,000	$ 17,300,000
Amounts due to affiliate					$ 2,628,000		$ 6,194,000
Film exhibition costs	233,390,000	220,608,000	751,894,000	689,928,000
Operating Results:
Revenues	154,838,000	142,400,000	433,831,000	398,584,000
Operating costs and expenses	99,850,000	97,641,000	341,178,000	305,632,000
Net earnings	54,988,000	44,759,000	92,653,000	92,952,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Equity in earnings and loss from amortization of basis difference	10,850,000	13,087,000	21,536,000	17,300,000
Equity in Losses
Equity in earnings of non-consolidated entities	(10,850,000)	(13,087,000)	(21,536,000)	(17,300,000)
NCM
Investments
Interest in non-consolidated affiliates (as a percent)					15.04%
Estimated fair market value of the units					$ 263,886,000
Receipt of common units			6,812,000
Number of units owned (in shares) | shares					19,663,664
The Company's recorded equity in earnings	4,431,000	3,249,000	3,360,000	5,258,000
Note payable to affiliate					$ 6,944,000		6,944,000
Financial Condition:
The company's recorded investment	260,292,000		265,839,000		260,292,000		265,839,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Balance at the beginning of the period			265,839,000
Receipt of common units			6,812,000
Receipt of excess cash distributions					(15,953,000)
Unrealized gain from cash flow hedge			234,000
Equity in earnings and loss from amortization of basis difference	4,431,000	3,249,000	3,360,000	5,258,000
Balance at the end of the period	260,292,000		260,292,000
Exhibitor Services Agreement
Balance at the beginning of the period			(316,815,000)
Receipt of Common Units			(6,812,000)
Amortization of ESA			11,467,000
Balance at the end of the period	(312,160,000)		$ (312,160,000)
Term of amortization of the exhibitor services agreement (ESA) with NCM			30 years
Other Comprehensive (Income)
Other comprehensive (income) at the beginning of the period			$ (3,780,000)
Unrealized gain from cash flow hedge			(234,000)
Other comprehensive (income) at the end of the period	(4,014,000)		(4,014,000)
Membership units received in ESA (in shares) | shares						469,163
Fair value of Membership units received in ESA (in dollars per share) | $ / shares						$ 14.52
Cash Received
Receipt of excess cash distributions			15,953,000
Balance at the end of the period	15,953,000		15,953,000
Equity in Losses
Equity in earnings of non-consolidated entities	(4,431,000)	(3,249,000)	(3,360,000)	(5,258,000)
Advertising (Revenue)
Amortization of ESA			(11,467,000)
Advertising (Revenue) for the period			(11,467,000)
NCM | NCM tax receivable agreement
Investments
Receipt under Tax Receivable Agreement			5,352,000	8,045,000
NCM | Advertising (Revenue)
Investments
Amounts due from affiliate					1,513,000		2,072,000
Revenues	8,756,000	8,482,000	26,727,000	25,854,000
NCM | Advertising expense
Investments
Expenses	1,321,000	2,887,000	6,836,000	9,077,000
NCM | Exhibitor services agreement
Investments
Amounts due to affiliate					$ 856,000		1,784,000
NCM | Capital units | Predecessor
Investments
Number of units owned (in shares) | shares								17,323,782
NCM | NCM, LLC
Investments
Price per share (in dollars per share) | $ / shares					$ 13.42
AC JV, LLC
Investments
Interest in non-consolidated affiliates (as a percent)					32.00%
The Company's recorded equity in earnings	(243,000)	321,000	983,000	959,000
Amounts due to affiliate					$ 520,000		333,000
Film exhibition costs	2,228,000	1,961,000	6,297,000	4,476,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Equity in earnings and loss from amortization of basis difference	(243,000)	321,000	983,000	959,000
Equity in Losses
Equity in earnings of non-consolidated entities	243,000	(321,000)	$ (983,000)	(959,000)
U.S. theatres and IMAX screen
Investments
Interest in non-consolidated affiliates (as a percent)					50.00%
Number of U.S. theatres | item			2
Number of IMAX screens | item			1
DCIP
Investments
Interest in non-consolidated affiliates (as a percent)					29.00%
The Company's recorded equity in earnings	6,253,000	5,537,000	$ 16,844,000	15,082,000
Amounts due from affiliate					$ 1,357,000		1,048,000
Capital contributions for projector and installation costs in excess of the cap per system for digital conversations			68,000
Capital contributions for projector and installation costs in excess of the cap per system for new build locations			$ 39,000
Term for payment of equipment rent, including scheduled escalations			12 years
Deferred rent liability for digital projectors					$ 8,801,000		9,031,000
Digital equipment rental expense (continuing operations)	1,350,000	1,268,000	$ 4,026,000	5,270,000
Warranty reimbursements received	1,335,000	934,000	3,716,000	2,590,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Equity in earnings and loss from amortization of basis difference	6,253,000	5,537,000	16,844,000	15,082,000
Equity in Losses
Equity in earnings of non-consolidated entities	(6,253,000)	(5,537,000)	(16,844,000)	(15,082,000)
Open Road Releasing, LLC, operator of ORF
Investments
Interest in non-consolidated affiliates (as a percent)					50.00%
The Company's recorded equity in earnings		3,630,000	(430,000)	(4,450,000)
Amounts due from affiliate					$ 1,945,000		2,560,000
Film rent payable to Open Road Films					84,000		$ 709,000
Film exhibition costs	660,000	900,000	4,100,000	10,000,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Equity in earnings and loss from amortization of basis difference		3,630,000	(430,000)	(4,450,000)
Equity in Losses
Equity in earnings of non-consolidated entities		(3,630,000)	430,000	4,450,000
Advertising (Revenue)
Capital commitment					$ 10,000,000
Cumulative loss			2,060,000
Other
Investments
The Company's recorded equity in earnings	409,000	350,000	779,000	451,000
Changes in carrying amount of investment in NCM and equity in earnings of NCM
Equity in earnings and loss from amortization of basis difference	409,000	350,000	779,000	451,000
Equity in Losses
Equity in earnings of non-consolidated entities	$ (409,000)	$ (350,000)	$ (779,000)	$ (451,000)
Maximum | Investments in non-consolidated affiliates and certain other investments accounted for following the equity method
Investments
Interest in non-consolidated affiliates (as a percent)					50.00%