Restructuring Charges (Details) $ in Thousands	3 Months Ended			6 Months Ended
	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($) Employee	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 4,743	$ 5,739	$ 5,854	$ 4,743
Restructuring charge, net of reversals	3,031	5,600		$ 8,634
Expected number of positions eliminated, more than | Employee			225
Abandoned facilities, percent of original space				29.00%
Period charges	$ 3,274	5,908
Percentage of reduction in floor space	36.00%
Excess Facilities
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	$ 4,354	4,023		$ 4,354
Restructuring charge, net of reversals	2,900	5,400
Period charges	2,874	5,409
Severance Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	389	1,616	$ 5,737	$ 389
Restructuring charge, net of reversals	200	200
Period charges	347	321
Lease abandonment
Restructuring Cost and Reserve [Line Items]
Period charges	1,900	$ 1,300
Contract Termination and Professional Fees
Restructuring Cost and Reserve [Line Items]
Restructuring charge, net of reversals	$ 1,000