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Consolidating Financial Information - Convertible Senior Subordinated Notes (Narrative) (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2016 | Mar. 31, 2016
January 2012 Notes | Convertible Senior Subordinated Notes |  |  |
Consolidating Financial Information [Line Items] |  |  |
Coupon rate |  | 4.00% |
April 2013 Notes | Convertible Senior Subordinated Notes |  |  |
Consolidating Financial Information [Line Items] |  |  |
Coupon rate |  | 1.25% |
5.25% Senior Notes | Senior Secured Second-Priority Notes |  |  |
Consolidating Financial Information [Line Items] |  |  |
Coupon rate |  | 5.25% | 5.25%
Lions Gate Entertainment Corp. | Convertible Senior Subordinated Notes |  |  |
Consolidating Financial Information [Line Items] |  |  |
Deferred financing costs | $ 964 |  |
Lions Gate Entertainment Inc. |  |  |
Consolidating Financial Information [Line Items] |  |  |
Percentage ownership of LGEI, the issuer, by parent company guarantor |  | 100.00% |

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