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1. NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 6 Months Ended
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Jun. 30, 2013
Accounting Policies [Abstract] |
Schedule of property plant and equipment |
|  | Useful life (in years)
Buildings (including salt pans) |  | 8 - 20
Plant and machinery (including protective shells, transmission channels and ducts) |  | 5 - 8
Motor vehicles |  | 5
Furniture, fixtures and equipment |  | 8
Schedule of computation of basic and diluted earnings per share |
|  | Three-Month Period Ended June 30, |  |  | Six-Month Period Ended June 30,
|  | 2013 |  |  | 2012 |  |  |  | 2013 |  |  |  | 2012 |  |
Numerator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 5,355,899 |  |  | $ | 5,688,674 |  |  | $ | 7,238,864 |  |  | $ | 8,975,781 |  |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic: Weighted-average common shares outstanding during the period |  |  | 38,367,471 |  |  |  | 34,560,743 |  |  |  | 38,367,471 |  |  |  | 34,560,743 |  |
Add: Dilutive effect of stock options |  |  | 223,656 |  |  |  | - |  |  |  | 178,571 |  |  |  | 651 |  |
Diluted |  |  | 38,591,127 |  |  |  | 34,560,743 |  |  |  | 38,546,042 |  |  |  | 34,561,394 |  |
Net income per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.14 |  |  | $ | 0.16 |  |  | $ | 0.19 |  |  | $ | 0.26 |  |
Diluted |  | $ | 0.14 |  |  | $ | 0.16 |  |  | $ | 0.19 |  |  | $ | 0.26 |  |

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- Definition Disclosure of accounting policy for depreciation, depletion, and amortization of property and equipment costs, including methods used and estimated useful lives and how impairment of such assets is assessed and recognized. + References No definition available. + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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