v2.4.0.8

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014 Plans	Mar. 31, 2013	Jun. 30, 2010	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans	2
Shares outstanding under equity incentive plans	721,000			893,000
Expense related to options granted under equity incentive plan	$ 21,000	$ 27,000
Stock options granted under equity incentive plans		0
Unrecognized compensation expense related to non-vested stock options	119,000
Recognition of unrecognized compensation expense, weighted-average period (in years)	1 year 8 months 5 days
Equity ownership percentage to benefit China employees			38.00%
Price of warrant			1.00
Vesting period of warrant			Vesting to occur one-third upon the first anniversary of the warrant and the remaining two-thirds to vest on a monthly basis over the succeeding 24 months.
Investment warrants expiration period (years)			6 years
Warrant Exercise Date			May 05, 2013
2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	709,000
Shares available for grant under equity incentive plans	467,000
2003 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	12,000
Shares available for grant under equity incentive plans	0
Hong Kong Subsidiary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Value funded to affiliates			1,000,000
Agreed additional funding to affiliates			1,000,000
Estimated fair value of warrants	365,000
Warrant performance period (years)	3 years
Stock expenses on equity-based payments related to warrant	$ 0	$ 30,000

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Date the warrants or rights are exercisable, in CCYY-MM-DD format.

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Exercise price per share or per unit of warrants or rights outstanding.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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