Quarterly report pursuant to Section 13 or 15(d)

SIGNIFICANT ACCOUNTING POLICIES UPDATE - Narrative (Details)

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SIGNIFICANT ACCOUNTING POLICIES UPDATE - Narrative (Details) - USD ($)
9 Months Ended 12 Months Ended
Dec. 22, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Accounting Policies [Line Items]        
Federal statutory income tax rate, percent 21.00%     35.00%
Increase (decrease) in net contract assets and liabilities   $ 3,700,000    
Contract with customer, liability, revenue recognized   5,200,000 $ 4,800,000  
Trade receivables   $ 14,189,909   $ 19,258,960
Transferred Over Time        
Accounting Policies [Line Items]        
Concentration risk, percentage   92.00%    
Revenue from Contract with Customer | Transferred Over Time        
Accounting Policies [Line Items]        
Concentration risk, percentage     93.00%