INCOME TAXES - Schedule of Gross Unrecognized Tax Benefits (Details) - USD ($)  | 
12 Months Ended | |
|---|---|---|
Dec. 31, 2018  | 
Dec. 31, 2017  | 
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| Income Tax Disclosure [Abstract] | ||
| Beginning balance: | $ 44,488 | $ 56,886 | 
| Increases related to tax positions taken during the current year | 19,765 | 5,229 | 
| Decreases related to expiration of statute of limitations | (35,129) | (16,806) | 
| Other adjustments | (821) | |
| Ending Balance: | $ 29,124 | $ 44,488 | 
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- Definition Unrecognized tax benefits other adjustments. No definition available. 
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- References No definition available. 
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- Definition Amount of unrecognized tax benefits. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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