Business and Basis of Presentation (Details)		3 Months Ended		9 Months Ended
	Jun. 28, 2016 USD ($) employee	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) segment	Sep. 30, 2015 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments | segment				3
Business Acquisition [Line Items]
Increase (decrease) in contingent consideration				$ 35,500,000
Acquisition and integration charges		$ 16,557,000	$ 6,488,000	32,958,000	$ 15,263,000
Acquisitions - increase in restricted cash (escrow)				13,600,000
Contingent consideration cash payment				21,900,000
Business combination, working capital adjustment, adjustment				$ 1,000,000
SCM World
Business Acquisition [Line Items]
Percentage of stock acquired	100.00%
Number of employees | employee	60
Payments to acquire businesses	$ 34,200,000
Payments to acquire businesses, net of cash acquired	28,300,000
Goodwill and intangible assets acquired	33,900,000
Other assets acquired	0
Contingent Consideration, Earn-out | SCM World
Business Acquisition [Line Items]
Increase (decrease) in contingent consideration		4,500,000
Maximum contingent consideration	15,000,000.0
Contingent Consideration, Employee Conditions | SCM World
Business Acquisition [Line Items]
Increase (decrease) in contingent consideration		$ 1,000,000
Maximum contingent consideration	$ 8,000,000.0
Maximum contingent consideration, period of expense recognition	2 years