CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (PARENTHETICAL) - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2016	Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		$ 59,579	$ 14,112
Cost of Sales
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	[1]	7,897	1,657
Research and Development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		17,517	7,098
Selling General And Administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense		$ 34,165	$ 5,357

[1] During the three months ended June 30, 2016, $2.8 million of share-based compensation expense was capitalized to inventory. The amount of share-based compensation included in cost of sales during the three months ended June 30, 2016, included $3.7 million of previously capitalized share-based compensation expense in inventory that was sold and $4.2 million of share-based compensation expense related to the Company's acquisition of Atmel that was not previously capitalized to inventory. During the three months ended June 30, 2015, $1.8 million of share-based compensation expense was capitalized to inventory and $1.7 million of previously capitalized share-based compensation expense in inventory was sold.