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1. NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2014
Accounting Policies [Abstract] |
Schedule of property plant and equipment useful life |
|  | 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 |
|  | Years ended December 31, |
|  | 2014 |  |  | 2013 |
Numerator |  |  |  |  |  |
Net income |  | $ | 17,871,795 |  |  | $ | 20,967,358 |
Denominator |  |  |  |  |  |  |  |
Basic: Weighted-average common shares outstanding during the year |  |  | 38,694,567 |  |  |  | 38,395,921 |
Add: Dilutive effect of stock options |  |  | 566,060 |  |  |  | 431,409 |
Diluted |  |  | 39,260,627 |  |  |  | 38,827,330 |
Net income per share |  |  |  |  |  |  |  |
Basic |  | $ | 0.46 |  |  | $ | 0.55 |
Diluted |  | $ | 0.46 |  |  | $ | 0.54 |

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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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