Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Aug. 01, 2011 Blammo	Aug. 02, 2012 Game Spy Industries	Aug. 02, 2011 Griptonite	Aug. 01, 2011 Noncompete agreement Blammo	Aug. 02, 2011 Noncompete agreement Griptonite	Aug. 01, 2011 In-Process Research and Development Blammo	Aug. 01, 2011 Goodwill Blammo	Aug. 02, 2012 Goodwill Game Spy Industries	Aug. 02, 2011 Goodwill Griptonite	Aug. 02, 2012 Carrier contract and related relationships Game Spy Industries	Aug. 02, 2012 Titles, content and technology Game Spy Industries	Aug. 02, 2011 Developed Technology Rights Griptonite
Liabilities assumed:
Other accrued liabilities		$ (689)
Accounts payable and other accrued liabilities	(287)		(1,226)
Deferred revenue		(1,684)
Deferred tax liability and other long-term liabilities			(2,771)
Other long-term liabilities	(721)
Deferred tax liability		(570)
Total liabilities	(1,008)	(2,943)	(3,997)
Net acquired assets	5,070	2,796	28,088
Assets acquired:
Total assets acquired	6,078	5,739	32,085
Cash and other assets	69
Cash		913	10,300
Accounts receivable		1,695	1,558
Prepaid and other current assets			1,028
Property and equipment		485	796
Other long term assets			33
Intangible assets:
Intangible assets				$ 1,400	$ 3,200	$ 300	$ 4,309	$ 1,096	$ 12,670	$ 250	$ 1,300	$ 2,500