Note 2 - Acquisition (Detail) - Unaudited Pro Forma Revenue And Earnings (Loss) Had The ActiveRain and KWKLY Acquisitions Occured On January 1, 2010 (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2011
Revenues	$ 27,544
Net loss attributable to Market Leader	$ (18,675)

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=7659399&loc=d3e1392-128463

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