Restructuring Charges (Narratives) (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($) Employee	Dec. 31, 2016 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges, net of reversals	$ 4,920	$ 7,719		$ 4,920	$ 9,572
Net adjustments associated with sublease		1,500
Restructuring charges				$ 4,920
Sub Lease Income for Non-cancelable Lease Payments for Excess Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 100
2018 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Severance and benefits charges	$ 4,900
2017 Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Restructuring and related charges, net of reversals		7,700			9,600
Accelerated depreciation of leasehold improvements		900			$ 2,600
Reduction-in-force
Restructuring Cost and Reserve [Line Items]
Severance and benefits charges		$ 5,300
Number of employees eliminated under reduction-in-force | Employee		90