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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Current Assets |  |
Cash | $ 146,585,601 us-gaap_Cash | $ 107,828,800 us-gaap_Cash
Accounts receivable | 41,997,862 us-gaap_AccountsReceivableNet | 44,885,354 us-gaap_AccountsReceivableNet
Inventories | 5,367,868 us-gaap_InventoryNet | 5,301,995 us-gaap_InventoryNet
Prepayments and deposits | 86,301 us-gaap_PrepaidExpenseAndOtherAssetsCurrent | 4,583 us-gaap_PrepaidExpenseAndOtherAssetsCurrent
Prepaid land leases | 51,024 us-gaap_OtherPrepaidExpenseCurrent | 50,548 us-gaap_OtherPrepaidExpenseCurrent
Other receivables | 38,272 us-gaap_OtherReceivables |
Deferred tax assets | 864 us-gaap_DeferredTaxAssetsNetCurrent | 1,657 us-gaap_DeferredTaxAssetsNetCurrent
Total Current Assets | 194,127,792 us-gaap_AssetsCurrent | 158,072,937 us-gaap_AssetsCurrent
Non-Current Assets |  |
Property, plant and equipment, net | 124,350,781 us-gaap_PropertyPlantAndEquipmentNet | 146,400,436 us-gaap_PropertyPlantAndEquipmentNet
Property, plant and equipment under capital leases, net | 1,339,602 us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet | 1,701,328 us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
Prepaid land leases, net of current portion | 733,560 us-gaap_PrepaidExpenseOtherNoncurrent | 753,928 us-gaap_PrepaidExpenseOtherNoncurrent
Deferred tax assets | 2,430,417 us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent | 2,316,176 us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent
Total non-current assets | 128,854,360 us-gaap_AssetsNoncurrent | 151,171,868 us-gaap_AssetsNoncurrent
Total Assets | 322,982,152 us-gaap_Assets | 309,244,805 us-gaap_Assets
Current Liabilities |  |
Accounts payable and accrued expenses | 4,004,728 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent | 5,645,831 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Retention payable | 326,959 us-gaap_RetentionPayable | 209,126 us-gaap_RetentionPayable
Capital lease obligation, current portion | 205,128 us-gaap_CapitalLeaseObligationsCurrent | 202,392 us-gaap_CapitalLeaseObligationsCurrent
Taxes payable | 3,545,429 us-gaap_TaxesPayableCurrent | 5,248,486 us-gaap_TaxesPayableCurrent
Total Current Liabilities | 8,082,244 us-gaap_LiabilitiesCurrent | 11,305,835 us-gaap_LiabilitiesCurrent
Non-Current Liabilities |  |
Capital lease obligation, net of current portion | 2,826,495 us-gaap_CapitalLeaseObligationsNoncurrent | 2,943,878 us-gaap_CapitalLeaseObligationsNoncurrent
Total Liabilities | 10,908,739 us-gaap_Liabilities | 14,249,713 us-gaap_Liabilities
Stockholders' Equity |  |
PREFERRED STOCK; $0.001 par value; 1,000,000 shares authorized; none outstanding |  |
COMMON STOCK; $0.0005 par value; 80,000,000 shares authorized; 38,911,014 and 38,765,201 shares issued; and 38,672,865 and 38,580,602 shares outstanding as of December 31, 2014 and 2013, respectively | 19,456 us-gaap_CommonStockValue | 19,383 us-gaap_CommonStockValue
Treasury stock; 238,149 and 184,599 shares as of December 31, 2014 and 2013 | (561,728)us-gaap_TreasuryStockValue | (500,000)us-gaap_TreasuryStockValue
Additional paid-in capital | 80,380,008 us-gaap_AdditionalPaidInCapital | 80,033,981 us-gaap_AdditionalPaidInCapital
Retained earnings unappropriated | 183,480,402 us-gaap_RetainedEarningsUnappropriated | 166,421,427 us-gaap_RetainedEarningsUnappropriated
Retained earnings appropriated | 18,078,392 us-gaap_RetainedEarningsAppropriated | 17,265,572 us-gaap_RetainedEarningsAppropriated
Cumulative translation adjustment | 30,676,883 us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax | 31,754,729 us-gaap_AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax
Total Stockholders' Equity | 312,073,413 us-gaap_StockholdersEquity | 294,995,092 us-gaap_StockholdersEquity
Total Liabilities and Stockholders' Equity | $ 322,982,152 us-gaap_LiabilitiesAndStockholdersEquity | $ 309,244,805 us-gaap_LiabilitiesAndStockholdersEquity

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- Definition Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
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