Restructuring Charges (Narratives) (Details)	3 Months Ended			6 Months Ended
	Dec. 31, 2016 USD ($) ft²	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) ft²	Jun. 30, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 3,823,000			$ 3,823,000	$ 4,644,000
Accelerated depreciation of leasehold improvements	$ 1,700,000
Area of prior headquarters site remaining under lease | ft²	34,905			34,905
Leasehold improvements related to prior headquarters at cease-use date	$ 0			$ 0
Restructuring charges				1,853,000
Restructuring charge, net of reversals		$ 3,000,000	$ 5,600,000
Percentage of reduction in floor space		36.00%
Sub-Lease Income for Exited Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100,000
Excess Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 3,823,000			3,823,000	$ 4,644,000
Restructuring charges				$ 135,000
Restructuring charge, net of reversals		$ 2,900,000	5,400,000
Severance Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals		200,000	200,000
Non-Cancelable Lease Payments
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals			4,100,000
Lease abandonment
Restructuring Cost and Reserve [Line Items]
Restructuring charges		1,900,000	$ 1,300,000
Contract Termination Charges and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals		$ 1,000,000