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FAIR VALUE OF FINANCIAL INSTRUMENTS
3 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Fair Value Disclosures [Text Block]
 
3.
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
The carrying values of cash and cash equivalents, accounts receivable and accounts payable and accrued liabilities approximate their fair values due to the short-term maturity of these financial instruments.
 
Financial instruments measured at fair value are classified into one of three levels in the fair value hierarchy according to the significance of the inputs used in making the measurement. The three levels of the fair value hierarchy are as follows:
 
 
Level 1 – Unadjusted quoted prices in active markets for identical assets or liabilities;
 
Level 2 – Inputs other than quoted prices that are observable for the asset or liability either directly or indirectly; and
 
Level 3 – Inputs that are not based on observable market data.