Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Net assets acquired:
Goodwill	$ 90,352		$ 87,812
Msdsonline One
Net assets acquired:
Goodwill	15,847
Customer lists (5-11 year life)	20,440
Trademarks, trade names and domain names (5-11 year life)	6,800
Technology (5 year life)	1,900
Non-compete agreements (3 year life)	3,580
Other net assets (liabilities)	1,170
Purchase price allocation assets acquired	49,737
Noncontrolling interest	(1,355)	[1]
Purchase price allocation assets acquired liabilities net	48,382
Bolt
Net assets acquired:
Goodwill	68,253
Customer lists (5-11 year life)	6,800
Trademarks, trade names and domain names (5-11 year life)	6,400
Technology (5 year life)	4,300
Other net assets (liabilities)	(5,150)
Purchase price allocation assets acquired	80,603
Noncontrolling interest	(31,824)	[1]
Purchase price allocation assets acquired liabilities net	48,779
Superior Access
Net assets acquired:
Goodwill	2,540
Customer lists (5-11 year life)	4,000
Trademarks, trade names and domain names (5-11 year life)	1,100
Technology (5 year life)	1,300
Other net assets (liabilities)	(229)
Purchase price allocation assets acquired	8,711
Purchase price allocation assets acquired liabilities net	$ 8,711

[1] ICG estimated the fair value of the noncontrolling interest in Bolt and MSDSonline with consideration of discounts for lack of control and lack of marketability. See “Redeemable Noncontrolling Interest” in this Note 4 with respect to MSDSonline.