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Note 6 - Nil Coupon Non-Redeemable Convertible Unsedcured Loan Notes (Detail) In Thousands, except Per Share data, unless otherwise specified | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2011 | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Jun. 28, 2012 Original Amount [Member] China Facility [Member] CNY | Jun. 30, 2011 Original Amount [Member] USD ($) | Jun. 30, 2011 Amended Amount [Member] USD ($) | Dec. 31, 2012 Minimum [Member] USD ($) | Jun. 30, 2011 Minimum [Member] | Dec. 31, 2012 Maximum [Member] USD ($) | Jun. 30, 2011 Maximum [Member] | Jun. 28, 2012 People's Bank of China Base Rate [Member] China Facility [Member] | Jun. 30, 2011 Amount Available for Increase Upon Approval of Lender [Member] USD ($) | Dec. 31, 2012 Leverage Ratio [Member] | Dec. 31, 2012 China Facility [Member] USD ($) | Jun. 29, 2012 China Facility [Member] USD ($) | Jun. 29, 2012 China Facility [Member] CNY | Dec. 31, 2011 China Facility [Member] USD ($)
Debt Instrument, Face Amount |  | $ 76 | $ 76 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in Dollars per share) |  |  |  |  |  |  |  | $ 6.50 |  | $ 11.43 |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Number of Equity Instruments |  | 6,715 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price (in Dollars per share) |  | $ 4.20 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Convertible, Carrying Amount of Equity Component |  | 28 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of Unsecured Debt |  | 0 | 0 | 5 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Date | Jun. 30, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | 35,000 | 15,000 | 25,000 |  |  |  |  |  | 25,000 |  |  | 5,541 | 35,000 |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  | 250.00% |  | 375.00% | 125.00% |  |  |  |  |  |
Line of Credit Facility, Covenant Terms |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.5:1.0 |  |  |  |
Annual Capital Expenditure Limit |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum Tangible Net Worth |  | 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Net Income |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Capital Issuances |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount |  | 7,432 | 1,374 |  |  |  |  |  |  |  |  |  |  |  | 1,112 |  |  | 750
Line of Credit Facility, Remaining Borrowing Capacity |  | 7,568 | 13,626 |  |  |  |  |  |  |  |  |  |  |  | 4,429 |  |  | 3,580
Line of Credit Facility, Commitment Fee Percentage |  | 0.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  | $ 1,181
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7.00% |  |  | 7.60%

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