Inventories (Schedule of Inventory Write-offs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Inventories [Line Items]
Inventory write-offs	$ 5,026	$ 6,422	$ 7,261	$ 10,529
Pre-Launch Inventories [Member]
Inventories [Line Items]
Inventory write-offs	$ 3,066	$ 0	$ 3,543	$ 689