XML 46 R30.htm IDEA: XBRL DOCUMENT v3.8.0.1
ACCOUNTS RECEIVABLE (Tables)
 12 Months Ended
Dec. 31, 2017
Receivables [Abstract]  
Schedule of Accounts and Notes Receivable
Accounts receivable, net, consists of the following at December 31:
 
2017
 
2016
Accounts receivable trade
$
12,925,059

 
$
12,598,493

Allowance for doubtful accounts
(1,636,068
)
 
(1,646,274
)
Accounts receivable trade, net
$
11,288,991

 
$
10,952,219