Corporate Relocation Plan (Details) $ in Thousands		3 Months Ended	6 Months Ended
	Feb. 05, 2015 position	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Sep. 15, 2015 ft²	Jun. 30, 2015 USD ($)
Corporate Relocation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		$ 9,150	$ 9,150		$ 6,356
Restructuring and other transition expenses, net of payments			10,686
Payments for Restructuring			7,282
Restructuring and Related Cost, Accelerated Depreciation		610
Restructuring and Related Cost, Cost Incurred to Date		20,300	20,300
Restructuring Reserve, Accrual Adjustment			0
Restructuring Reserve, Current		9,150	9,150		6,356
Restructuring Reserve, Noncurrent		0	0		0
Restructuring and Related Cost, Expected Cash Payments		27,000	27,000
Severance Costs		16,000
Relocation Costs		5,000
Other Restructuring Costs		6,000
Corporate Relocation Plan [Member] | Employee-related [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		9,150	9,150		6,156
Restructuring and other transition expenses, net of payments			6,614
Payments for Restructuring			3,620
Restructuring and Related Cost, Cost Incurred to Date		13,100	13,100
Restructuring Reserve, Accrual Adjustment			0
Corporate Relocation Plan [Member] | Facility related [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		0	0		0
Restructuring and other transition expenses, net of payments			2,000
Payments for Restructuring			1,335
Restructuring and Related Cost, Cost Incurred to Date		2,000	2,000
Restructuring Reserve, Accrual Adjustment			0
Corporate Relocation Plan [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		0	0		$ 200
Restructuring and other transition expenses, net of payments			2,127
Payments for Restructuring			2,327
Restructuring and Related Cost, Cost Incurred to Date		$ 5,200	5,200
Restructuring Reserve, Accrual Adjustment			0
Corporate Relocation Plan [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Accelerated Depreciation			$ 610
Torrance, California [Member] | Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Effected | position	350
Fort Worth, Texas [Member]
Restructuring Cost and Reserve [Line Items]
Area of real estate property (in sqft) | ft²				32,000