Inventories (Schedule of Inventory Write-offs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Inventories [Line Items]
Inventory write-offs (recoveries)	$ 624		$ 955	$ 7,885	$ 11,484
Pre-Launch Inventories [Member]
Inventories [Line Items]
Inventory write-offs (recoveries)	$ (1,185)	[1]	$ 665	$ 2,358	$ 1,354

[1] During the three months ended September 30, 2014, we reached an agreement with a partner to cancel a project. As part the agreement we recovered the value of our initial pre-launch inventory purchase, for which we had previously recorded a write-off.