Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill acquired during period		$ 12,958,000	$ 10,518,000
Impairment of goodwill	21,450,000	21,450,000
Impairment of acquisition-related intangible assets	19,912,000	19,912,000
Intangible asset remaining balance expected to recover	17,700,000	17,700,000
Intangible Assets, net	17,660,000	17,660,000	36,001,000	[1]
Intangible assets, nonamortizable			9,300,000
Impairment charge of indefinite-lived intangible assets			8,100,000
Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Discount rate used for calculation of present value		16.00%
Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Discount rate used for calculation of present value		20.00%
Group One
Goodwill and Intangible Assets Disclosure [Line Items]
Discount rate used for calculation of present value		50.00%
payment solution AG
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets acquired		4,232,000
Impairment of acquisition-related intangible assets		$ 2,100,000

[1] The condensed consolidated balance sheet has been derived from the audited consolidated financial statements at December 31, 2011 but does not include all the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.