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v2.4.1.9

Income Taxes - Significant Portions of Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets-current: |  |
Tax loss carried forwards of a subsidiary | $ 74 us-gaap_DeferredTaxAssetsNetCurrent | $ 37 us-gaap_DeferredTaxAssetsNetCurrent

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