Restructuring Plans - Restructuring Activity (Details) - USD ($)			3 Months Ended	23 Months Ended	33 Months Ended
	Feb. 21, 2017	Feb. 05, 2015	Sep. 30, 2017	Dec. 31, 2016	Mar. 31, 2017	Jun. 30, 2017
Employee-related
Restructuring Reserve [Roll Forward]
Payments			$ 1,100,000
Other Restructuring
Restructuring Reserve [Roll Forward]
Payments			1,400,000
Corporate Relocation Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs				$ 31,000,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve-Beginning Balance			301,000		$ 0
Additions			0		35,555,000
Payments			89,000		31,612,000
Non-Cash Settled			0		3,731,000
Adjustments			0		0
Restructuring Reserve-Ending Balance			212,000
Current portion			212,000			$ 301,000
Non-current portion			0			$ 0
Corporate Relocation Plan | Employee-related
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs		$ 18,000,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve-Beginning Balance			301,000		0
Additions			0		17,352,000
Payments			89,000		17,140,000
Non-Cash Settled			0		0
Adjustments			0		0
Restructuring Reserve-Ending Balance			212,000
Corporate Relocation Plan | Facility Closing
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs		5,000,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve-Beginning Balance			0		0
Additions			0		10,779,000
Payments			0		7,048,000
Non-Cash Settled			0		3,731,000
Adjustments			0		0
Restructuring Reserve-Ending Balance			0
Restructuring and Related Cost, Accelerated Depreciation				2,300,000
Sale Leaseback Transaction, monthly rent, after lease extension				$ 1,400,000
Corporate Relocation Plan | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs		$ 8,000,000
Restructuring Reserve [Roll Forward]
Restructuring Reserve-Beginning Balance			0		0
Additions			0		7,424,000
Payments			0		7,424,000
Non-Cash Settled			0		0
Adjustments			0		$ 0
Restructuring Reserve-Ending Balance			0
DSD Restructuring Plan
Restructuring Reserve [Roll Forward]
Payments			2,200,000
DSD Restructuring Plan | Employee-related
Restructuring Reserve [Roll Forward]
Additions			24,000
Restructuring Reserve-Ending Balance			300,000
DSD Restructuring Plan | Other Restructuring
Restructuring Reserve [Roll Forward]
Additions			$ 100,000
Minimum | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	$ 3,700,000
Minimum | DSD Restructuring Plan | Employee-related
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	1,900,000
Minimum | DSD Restructuring Plan | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	1,800,000
Maximum | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	4,900,000
Maximum | DSD Restructuring Plan | Employee-related
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	2,700,000
Maximum | DSD Restructuring Plan | Other Restructuring
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	$ 2,200,000