Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies (Tables)

v3.20.1
Basis of Presentation and Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2020
Accounting Policies [Abstract]  
Schedule of allowance for doubtful accounts receivable
Following is a roll forward of the allowance for doubtful accounts for the year ended December 31, 2019 and the three months ended March 31, 2020 (in thousands):

Balance, January 1, 2019 $ 5,198   
Additions charged to bad debt expense 1,771   
Recoveries of receivables previously charged to bad debt expense (337)  
Deductions for uncollectible receivables written off (1,478)  
Balance, December 31, 2019 5,154   
Additions charged to bad debt expense 525   
Recoveries of receivables previously charged to bad debt expense (470)  
Deductions for uncollectible receivables written off (220)  
Balance, March 31, 2020 $ 4,989   
Schedules of concentration of risk Following is a summary of our significant customers based on percentages of total accounts receivable balances at March 31, 2020 and December 31, 2019 and percentages of total revenues derived for the three months ended March 31, 2020 and 2019:
REVENUES ACCOUNTS RECEIVABLE
Three Months Ended March 31, At March 31, At December 31,
2020 2019 2020 2019
Customer A(a)
—  % 33  % 71  % 73  %
Customer B(b)
20  % 21  % 5  % 2  %
Customer C(c)
14  % 1  % 2  % 2  %
Customer D(d)
10  % 3  % 3  % 3  %
Customer E(e)
—  % 14  % —  % —  %
a.Customer A is a third-party customer. Revenues and the related accounts receivable balances earned from Customer A were derived from the Company's infrastructure services segment. Accounts receivable for Customer A also includes receivables due for interest charged on delinquent accounts receivable.
b.Customer B is a related party customer. Revenues and the related accounts receivable balances earned from Customer B were derived from the Company's pressure pumping services segment, natural sand proppant services segment and other businesses.
c.Customer C is a third-party customer. Revenues and the related accounts receivable balances earned from Customer C were derived from the Company's pressure pumping services segment and equipment rental business.
d.Customer D is a third-party customer. Revenues and the related accounts receivable balances earned from Customer D were derived from the Company's infrastructure services segment.
e.Customer E is a related party customer. Revenues and the related accounts receivable balances earned from Customer E were derived from the Company's pressure pumping segment and equipment rental business.