The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 159

-Paragraph 18

-Subparagraph f

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 18

-Paragraph 20

-Subparagraph a (1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The Company - Additional Information (Detail)	6 Months Ended				1 Months Ended
The Company - Additional Information (Detail)	Jun. 30, 2013	Mar. 30, 2012	Jun. 30, 2013 Minimum	Jun. 30, 2013 Maximum	Dec. 27, 2012 Bolt	Jul. 11, 2012 Channel Intelligence Minimum	Feb. 20, 2013 Channel Intelligence Maximum
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Percentage of ownership					53.00%
Equity method investment, ownership percentage			20.00%	50.00%		52.00%	38.00%
Percentage of business acquisition		96.00%
Business acquisition date	Mar. 30, 2012