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Discontinued Operations - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]
Income (loss) from discontinued operations		$ (16)	$ 374
Discrete claims and balances due to and due from DigiNotar were reassessed resulting in gain, net of tax	$ 485

X

- Definition

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 43

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- Definition

Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 810

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-URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683



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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 51

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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