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Investment in Digital Cinema Implementation Partners - Additional Information (Detail) (USD $) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2013 ProjectionSystem | Jun. 30, 2012 | Jun. 30, 2013 RenewalOptions ProjectionSystem | Jun. 30, 2012
Schedule of Equity Method Investments [Line Items] |  |  |  |
Voting interest in Digital Cinema Implementation Partners | 33.00% |  | 33.00% |
Economic interest in Digital Cinema Implementation Partners | 24.30% |  | 24.30% |
Equity in income | $ 1,685,000 | $ 988,000 | $ 4,106,000 | $ 2,778,000
Digital projection systems leased under operating lease, initial term |  |  | 12 years |
Number of equipments being leased under master equipment lease agreement | 3,519 |  | 3,519 |
Equipment lease expense |  |  | 3,951,000 | 3,871,000
Number of one-year fair value renewal options |  |  | 10 |
Minimum annual rent per digital projection system |  |  | 1,000 |
Minimum annual rent per digital projection system through the end of the lease term |  |  | 3,000 |
Digital Cinema Implementation Partners LLC |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity in income |  |  | $ 2,702,000 | $ 2,997,000

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