Preliminary Allocation of Purchase Price for Loyalty Lab Acquisition (Detail) (Loyalty Lab, USD $) In Thousands, unless otherwise specified	Dec. 07, 2010
Loyalty Lab
Schedule of Business Acquisitions, Purchase Price Allocation [Line Items]
Cash	$ 905
Accounts receivable (approximate contractual value)	5,118
Deferred income tax assets, net	3,758
Other assets	729
Identifiable intangible assets	6,600
Goodwill	11,966
Liabilities	(5,590)
Total preliminary purchase price	$ 23,486

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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