Summary of Gross Carrying Amount and Accumulated Amortization for Intangible Assets Resulting from Acquisitions (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	$ 44,370	$ 38,149
Impairment of intangible assets	(25,337)
Currency translation adjustment	(303)	428
Ending Balance	22,962	44,370
Beginning Balance	(8,369)	(4,284)
Amortization expense	(2,420)	(4,097)
Impairment of intangible assets	5,425
Currency translation adjustment	62	12
Ending Balance	(5,302)	(8,369)
Intangible Assets, net	17,660	36,001	[1]
idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		4,257
polyright SA
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		1,536
payment solution AG
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition	4,232
Order backlog
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	948	724
Impairment of intangible assets	(841)
Currency translation adjustment	(22)	(39)
Ending Balance	429	948
Beginning Balance	(948)	(718)
Amortization expense	(37)	(235)
Impairment of intangible assets	677
Currency translation adjustment	10	5
Ending Balance	(298)	(948)
Intangible Assets, net	131
Order backlog | Minimum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	3 months
Order backlog | Maximum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	1 year
Order backlog | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		17
Order backlog | polyright SA
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		246
Order backlog | payment solution AG
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition	344
Trade secrets
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	300
Impairment of intangible assets	(300)
Ending Balance		300
Beginning Balance	(120)
Amortization expense	(90)	(120)
Impairment of intangible assets	210
Ending Balance		(120)
Intangible Assets, net		180
Trade secrets | Minimum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	1 year
Trade secrets | Maximum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	2 years
Trade secrets | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		300
Patents
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	790
Amortization period	12 years
Impairment of intangible assets	(790)
Ending Balance		790
Beginning Balance	(44)
Amortization expense	(33)	(44)
Impairment of intangible assets	77
Ending Balance		(44)
Intangible Assets, net		746
Patents | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		790
Existing technology
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	8,170	5,462
Impairment of intangible assets	(4,359)
Currency translation adjustment	(88)	8
Ending Balance	5,746	8,170
Beginning Balance	(1,295)	(595)
Amortization expense	(550)	(715)
Impairment of intangible assets	743
Currency translation adjustment	7	15
Ending Balance	(1,095)	(1,295)
Intangible Assets, net	4,651	6,875
Existing technology | Minimum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	6 years
Existing technology | Maximum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	15 years
Existing technology | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		2,700
Existing technology | payment solution AG
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition	2,023
Customer relationships
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	24,795	22,742
Impairment of intangible assets	(10,540)
Currency translation adjustment	(156)	373
Ending Balance	15,422	24,795
Beginning Balance	(5,924)	(2,970)
Amortization expense	(1,661)	(2,946)
Impairment of intangible assets	3,644
Currency translation adjustment	45	(8)
Ending Balance	(3,896)	(5,924)
Intangible Assets, net	11,526	18,871
Customer relationships | Minimum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	4 years
Customer relationships | Maximum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	15 years
Customer relationships | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		390
Customer relationships | polyright SA
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		1,290
Customer relationships | payment solution AG
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition	1,323
Trade name
Acquired Intangible Assets by Major Class [Line Items]
Beginning Balance	9,367	9,221
Amortization period	Indefinite
Impairment of intangible assets	(8,507)
Currency translation adjustment	(37)	86
Ending Balance	1,365	9,367
Beginning Balance	(38)	(1)
Amortization expense	(49)	(37)
Impairment of intangible assets	74
Ending Balance	(13)	(38)
Intangible Assets, net	1,352	9,329
Trade name | Minimum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	1 year
Trade name | Maximum
Acquired Intangible Assets by Major Class [Line Items]
Amortization period	10 years
Trade name | idOnDemand, Inc.
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition		60
Trade name | payment solution AG
Acquired Intangible Assets by Major Class [Line Items]
Acquired as a part of acquisition	$ 542

[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.