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EMPLOYEE DEFINED CONTRIBUTION PLAN (Details) (USD $)
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3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
|
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| EMPLOYEE DEFINED CONTRIBUTION PLAN [Abstract] | ||||
| Defined contribution plan, expenses | $ 155,843 | $ 177,086 | $ 336,851 | $ 409,025 |