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Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 9 Months Ended
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Sep. 30, 2013
Income Taxes Disclosure [Line Items] |
Annual limitation on ownership change | $ 7.0
Additional annual limitations to NOL | 1.6
Arbinet Corporation Acquisition [Member] |
Income Taxes Disclosure [Line Items] |
Net operating loss carryforwards subject to annual limitation | $ 2.2

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- Definition Annual limitations on net operating loss. + References No definition available. + Details
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- Details
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- Definition Net operating loss carryforward annual limitation. + References No definition available. + Details
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- Definition Operating loss carryforwards annual change of ownership limitation. + References No definition available. + Details
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