v2.4.0.8

Stock-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2010	Sep. 30, 2013 Plans	Sep. 30, 2012	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans				2
Shares outstanding under equity incentive plans	618,000			618,000		643,000
Expense related to options granted under equity incentive plan	$ 12,000	$ 27,000		$ 64,000	$ 84,000
Stock options granted under equity incentive plans					10,000
Fair value assumption, risk-free interest rate				0.91%
Fair value assumption, expected dividend yields				0.00%
Fair value assumption, expected term (years)				4 years
Fair value assumption, expected volatility rate				109.00%
Unrecognized compensation expense related to non-vested stock options	1,000			1,000
Recognition of unrecognized compensation expense, weighted-average period (in years)				5 months 19 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
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 warrant	365,000			365,000
Warrant performance period (years)				3 years
Stock expenses on equity-based payments related to warrant		$ 30,000		$ 40,000	$ 90,000
2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	606,000			606,000
Shares available for grant under equity incentive plans	742,000			742,000
2003 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding under equity incentive plans	12,000			12,000

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Vesting to occur one third upon first anniversary of warrant and remaining two thirds to vest on monthly basis over succeeding twenty four months.

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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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Fair value of share-based compensation granted to nonemployees as payment for services rendered or acknowledged claims.

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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 estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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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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Net number of share options (or share units) granted during the period.

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