Allocation of Purchase Price for Acquisitions and Enterprise Value of Channel Intelligence (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
MSDSonline
Net assets acquired:
Goodwill	$ 15,847
Customer lists (8-11 year life)	20,440
Technology (5-11 year life)	1,900
Trademarks, trade names and domain names (2-15 year life)	6,800
Non-compete agreements (1-5 year life)	3,580
Other net assets (liabilities)	1,170
Purchase price allocation assets acquired liabilities net	49,737
Noncontrolling interest	(1,355)	[1]
Purchase price allocation assets acquired	48,382
Media IQ
Net assets acquired:
Goodwill	9,491
Customer lists (8-11 year life)	6,200
Technology (5-11 year life)	900
Trademarks, trade names and domain names (2-15 year life)	600
Non-compete agreements (1-5 year life)	268
Other net assets (liabilities)	316
Purchase price allocation assets acquired liabilities net	17,775
Purchase price allocation assets acquired	17,775
UAI
Net assets acquired:
Goodwill	3,194
Customer lists (8-11 year life)	3,100
Technology (5-11 year life)	1,050
Trademarks, trade names and domain names (2-15 year life)	40
Non-compete agreements (1-5 year life)	120
Other net assets (liabilities)	(777)
Purchase price allocation assets acquired liabilities net	6,727
Purchase price allocation assets acquired	6,727
Bolt
Net assets acquired:
Goodwill	69,775
Customer lists (8-11 year life)	6,800
Technology (5-11 year life)	4,300
Trademarks, trade names and domain names (2-15 year life)	6,400
Non-compete agreements (1-5 year life)
Other net assets (liabilities)	(5,850)
Purchase price allocation assets acquired liabilities net	81,425
Noncontrolling interest	(31,824)	[1]
Purchase price allocation assets acquired	$ 49,601

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