Assets of Discontinued Operations (Detail) (Channel Intelligence, USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
ICG’s goodwill related to Channel Intelligence discontinued operations	$ 48,895
ICG’s intangible assets related to Channel Intelligence discontinued operations:
Intangible assets	22,434
Customer Relationships
ICG’s intangible assets related to Channel Intelligence discontinued operations:
Intangible assets	9,522
Trademarks, trade names and domain names
ICG’s intangible assets related to Channel Intelligence discontinued operations:
Intangible assets	6,683
Licensing And Servicing Agreements
ICG’s intangible assets related to Channel Intelligence discontinued operations:
Intangible assets	3,519
Developed Technology
ICG’s intangible assets related to Channel Intelligence discontinued operations:
Intangible assets	$ 2,710