Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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

Segment Information - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended					12 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Segment	Sep. 30, 2013	Sep. 30, 2014 Procurian	Sep. 30, 2014 Channel Intelligence	Sep. 30, 2014 Investor Force	Dec. 31, 2013 White Fence	Dec. 31, 2013 Freeborders	Sep. 30, 2014 Europe and Canada	Sep. 30, 2013 Europe and Canada	Sep. 30, 2014 Europe and Canada	Sep. 30, 2013 Europe and Canada
Segment Reporting Information [Line Items]
Number of reporting segments			2
Revenue	$ 20,762	$ 16,071	$ 58,213	$ 41,521						$ 1,100	$ 600	$ 2,700	$ 1,800
Segments disposal date					Dec. 04, 2013	Feb. 20, 2013	Jan. 29, 2013	Oct. 28, 2013	Oct. 18, 2013