Restructuring and Related Charges, Net of Reversals (Narratives) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($) Employee	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 6,455	$ 6,455	$ 4,122	$ 4,644	$ 5,854
Restructuring charge, net of reversals		8,100	8,900	11,000
Restructuring and related charges, net of reversals		8,140	8,896	10,990
Accelerated depreciation of leasehold improvements		2,600
Additional sublease charges			2,000
Reversal of prior accruals	1,300	12	1,446	$ 726
Abandoned facilities, percent of original space				32.00%
San Jose Location
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost excess facility non-cancellable leased space percent				39.00%
North Carolina Location
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals				$ 4,100
Accelerated depreciation of leasehold improvements				$ 3,100
Abandoned facilities, percent of original space				36.00%
Salem Location
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals				$ 4,400
Accelerated depreciation of leasehold improvements				$ 1,300
Restructuring and related cost excess facility non-cancellable leased space percent				27.00%
Non-Cancelable Lease Payments
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals				$ 5,400
Non-Cancelable Lease Payments | San Jose Location
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals				1,800
Excess Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 1,797	1,797	2,184	4,644
Reversal of prior accruals			1,337	18
Professional fee related to restructuring charge				1,000
Other restructuring charge				100
Excess Facilities | Leasehold Improvements
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation of leasehold improvements				$ 4,500
2018 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Severance and benefits charges		7,900
2018 Reduction-in-force | Non-Cancelable Lease Payments
Restructuring Cost and Reserve [Line Items]
Charges for changes to estimates for accrued lease costs		$ 200
Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Severance and benefits charges			$ 5,600
Number of employees eliminated under reduction-in-force | Employee			90