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Income Taxes - Significant Portions of Deferred Tax Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets-current:
Tax loss carried forwards of a subsidiary	$ 37

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- Definition

Deferred tax assets tax loss carried forwards of subsidiary current.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	duration