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, 2018
Dec. 31, 2017
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