Inventory (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Inventory [Line Items]
Raw materials	$ 170,273		$ 170,273		$ 92,287
Work in process	162,718		162,718		202,301
Finished goods	33,021		33,021		13,334
Deferred costs	188,308		188,308		91,434
Total Inventories	554,320		554,320		$ 399,356
Inventory Write-down	$ 2,700	$ 2,000	$ 9,100	$ 6,300