Business, Basis of Presentation and Significant Accounting Policies (Narrative) (Details)		12 Months Ended
		Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Number of reportable segments | segment		5
Book overdrafts		$ 39,900,000	$ 36,000,000
Inventory obsolescence reserves		3,500,000	2,800,000
Financing costs incurred			2,400,000	$ 2,600,000
Deferred financing costs, net of accumulated amortization	[1]	9,800,000	12,900,000
Provision for U.S. income taxes on unremitted foreign earnings		0
Uninsured Risk [Member] | Workers' Compensation Policy [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Per claim deductible, insurance policies		1,500,000
Uninsured Risk [Member] | General Liability Policy [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Per claim deductible, insurance policies		2,000,000
Uninsured Risk [Member] | Property Insurance Policy [Member] | Automobiles [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Per claim deductible, insurance policies		3,000,000
Uninsured Risk [Member] | Umbrella Policy [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Maximum annual coverage limit, per claim		100,000,000
Maximum annual coverage limit, in aggregate		100,000,000
Uninsured Risk [Member] | Employee Group Medical Claims Policy [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Loss contingency, maximum loss per employee		500,000
Interest Expense [Member]
Business, Basis Of Presentation And Significant Accounting Policies [Line Items]
Amortization of deferred financing costs		$ 3,200,000	$ 2,900,000	$ 3,400,000

[1] The Company adopted ASU 2015-03 as of January 1, 2016, which resulted in the reclassification of $12.9 million of deferred financing costs from other current and other long-term assets to current and long-term debt as of December 31, 2015.