Commitments and Contingencies (Narrative) (Details) (USD $)	6 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014 Standby Letters of Credit [Member] Quantity	Jun. 30, 2014 Manufacturing and Service Agreement as Part of Asset Acquisition [Member]	Jun. 30, 2014 Content Arrangements [Member]
Long-term Purchase Commitment [Line Items]
Purchase commitments			$ 16,700,000	$ 203,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized				25,000
Purchase obligation, term			5 years
Minimum margin to be paid			25,000,000
Number of irrevocable standby letters of credit		6
Maximum capacity to guarantee under existing letters of credit		8,600,000
Irrevocable standby letters of credit, amount outstanding		0
Loss Contingency Accrual, Period Increase (Decrease)	$ 11.4