Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Schedule of Gross Unrecognized Tax Benefits (Details)

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INCOME TAXES - Schedule of Gross Unrecognized Tax Benefits (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]    
Beginning balance: $ 56,886 $ 51,074
Increases related to tax positions taken during the current year 5,229 12,572
Decreases related to expiration of statute of limitations (16,806) (6,760)
Other adjustments (821)  
Ending Balance: $ 44,488 $ 56,886