Commitments and Contingencies (Estimated Commitments from License Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Contractual Obligations [Line Items]
Total	$ 674,310
2015	493,069
2016	160,449
2017	20,792
Warner [Member]
Contractual Obligations [Line Items]
Total	206,110
2015	87,081
2016	98,237
2017	20,792
Lionsgate [Member]
Contractual Obligations [Line Items]
Total	123,376
2015	69,699
2016	53,677
2017	0
Universal [Member]
Contractual Obligations [Line Items]
Total	111,085
2015	102,550
2016	8,535
2017	0
Sony [Member]
Contractual Obligations [Line Items]
Total	95,934
2015	95,934
2016	0
2017	0
Paramount [Member]
Contractual Obligations [Line Items]
Total	88,963
2015	88,963
2016	0
2017	0
Fox [Member]
Contractual Obligations [Line Items]
Total	48,842
2015	48,842
2016	0
2017	$ 0