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LONG-TERM DEBT (Tables)
12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Schedule of maturities of long-term debt

The maturities of the long-term debt (excluding unamortized debt issuance costs) are as follows:

 

Year ending December 31,     
2019   $2,434,981 
2020    3,647,234 
2021    150,225 
2022    107,078 
2023    21,509 
    $6,361,026