Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Tables)

v3.19.1
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Schedule of Allowance for Doubtful Accounts Receivable
Following is a roll forward of the allowance for doubtful accounts for the years ended December 31, 2018, 2017 and 2016 (in thousands):
Balance, January 1, 2016
 
$
4,012

Additions charged to expense
 
1,968

Deductions for uncollectible receivables written off
 
(603
)
Balance, December 31, 2016
 
5,377

Additions charged to expense
 
16,206

Additions - other
 
179

Deductions for uncollectible receivables written off
 
(25
)
Balance, December 31, 2017
 
21,737

Additions charged to expense
 
(14,589
)
Deductions for uncollectible receivables written off
 
(1,950
)
Balance, December 31, 2018
 
$
5,198

Schedule of Asset Retirement Obligations
Following is a roll forward of the Company's asset retirement obligations for the years ended December 31, 2018 and 2017 (in thousands):
 
 
December 31,
 
 
2018
 
2017
Balance as of beginning of period
 
$
2,123

 
$
260

Additions
 
989

 
—

Liabilities assumed through acquisition
 
—

 
1,732

Accretion expense
 
60

 
124

Foreign currency translation adjustment
 
(8
)
 
7

Asset retirement obligation as of end of period
 
$
3,164

 
$
2,123

Schedules of Significant Customers
Following is a summary of our significant customers based on accounts receivable balances at December 31, 2018 and 2017 and revenues derived for the years ended December 31, 2018, 2017 and 2016:
 
REVENUES
 
ACCOUNTS RECEIVABLE
 
Years Ended December 31,
 
At December 31,
 
2018
2017
2016
 
2018
2017
Customer A(a)
60
%
29
%
—

 
65
%
56
%
Customer B(b)
8
%
30
%
57
%
 
3
%
12
%
Customer C(c)
—
%
1
%
11
%
 
—
%
—
%
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.
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 earned from Customer C were derived from the Company's remote accommodations business.