Acquisitions - Additional Information (Detail) (Bornemann [Member], USD $) In Millions, unless otherwise specified	0 Months Ended	1 Months Ended
Nov. 28, 2012 Employees	Nov. 28, 2012 Employees
Bornemann [Member]
Business Acquisition [Line Items]
Purchase price of issued and outstanding stock, net of cash acquired	$ 192.5
Number of employees	550	550
Acquisition date		Nov. 28, 2012

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration