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Supplemental Balance Sheet Information
 12 Months Ended
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Supplemental Balance Sheet Information Supplemental Balance Sheet Information
Accounts Receivable
The following table summarizes our accounts receivable balance:
December 31,
(in thousands)20202019
Trade accounts receivable$63,404 $101,947 
Allowance for credit losses(3,053)(2,208)
Accounts receivable, net$60,351 $99,739 
The Company included in its allowance for credit losses the impact of the approximately $39.5 million of accounts receivable from the acquisition of CJWS as of the March 9, 2020, closing date.
The following table presents activity in the allowance for credit losses:
Year Ended December 31,
(in thousands)20202019
Balance as of December 31, 2019$2,208 $1,838 
Provision for expected credit losses, net of writeoffs & recoveries10,268 4,686 
Uncollectible receivables written off(9,423)(4,316)
Balance as of December 31, 2020$3,053 $2,208 
The provision for expected credit losses and uncollectible receivables written off for the year ended December 31, 2020 and 2019 includes $4.0 million and $1.0 million, respectively, of items related to discontinued operations.
Inventories
The following table summarizes our inventories:
December 31,
(in thousands)20202019
Service tools$7,859 $8,081 
Coiled tubing239 1,558 
Manufacturing related— 8,925 
Other618 1,698 
Total inventories$8,716 $20,262 
Manufacturing related inventory decreased due to the closure of our manufacturing facility.
Prepaid Expenses and Other Current Assets
The following table summarizes our prepaid expenses and other current assets:
December 31,
(in thousands)20202019
Prepaid expenses$8,240 $6,407 
Other3,770 2,614 
Total prepaid expenses and other current assets$12,010 $9,021 
Property and Equipment, net
The following table summarizes our property and equipment. Prior year amounts are adjusted for the discontinued pumping services and contract drilling operations:
EstimatedDecember 31,
(in thousands)Useful Life20202019
Service equipment
3-15 years
$173,805 $262,578 
Brine and saltwater disposal facilities
10-15 years
90,677 92,103 
Rental equipment
2-15 years
46,812 60,886 
Buildings and improvements
20-30 years
34,432 30,902 
Land17,832 15,682 
Light vehicles
3-7 years
14,529 26,630 
Other4,772 4,844 
Total property and equipment382,859 493,625 
Less accumulated depreciation and amortization(172,296)(196,512)
Property and equipment, net$210,563 $297,113 
The table below summarizes the gross amount of property and equipment and related accumulated amortization recorded under finance leases and included above:
 December 31,
(in thousands)20202019
Service equipment$40,809 $51,075 
Light vehicles7,137 19,563 
Rental equipment881 1,130 
48,827 71,768 
Less accumulated amortization(22,691)(27,727)
Finance lease right-of-use assets$26,136 $44,041 
Intangible Assets, net
The Company’s intangible assets subject to amortization were as follows:
December 31,
(in thousands)20202019
Trade names$7,230 $3,230 
Other intangible assets48 48 
     Sub-total7,278 3,278 
Less accumulated amortization(1,100)(675)
Intangible assets, net$6,178 $2,603 
Amortization expense for each of the years ended December 31, 2020 and 2019 was approximately $0.4 million and $0.2 million, respectively. In 2019, the Company wrote off $0.2 million of net trade names related to the discontinued pumping services line of business.
Amortization expense for the next five succeeding years is expected to be as follows:
(in thousands)Amortization Expense
2021$492 
2022482 
2023482 
2024482 
2025482 
Thereafter3,758 
  Total$6,178 
Other Assets
The following table summarizes our other assets:
December 31,
(in thousands)20202019
Cash surrender value of company-owned life insurance$10,839 $10,300 
Real estate held for sale10,634 — 
Cloud computing capitalized costs, net2,291 1,260 
Deposits1,206 1,853 
Deferred debt issuance costs for credit facility957 2,198 
Other1,346 219 
Total other assets$27,273 $15,830 
Accrued Expenses
The following table summarizes our accrued expenses: 
December 31,
(in thousands)20202019
Employee compensation and benefits$29,789 $20,889 
Accrued interest9,326 8,996 
Property taxes7,724 4,672 
Sales and use taxes4,070 2,114 
Federal and state income tax 3,032 2,375 
Other 1,323 184 
  Total accrued expenses$55,264 $39,230 
Other Current Liabilities
The following table summarizes our other current liabilities:
December 31,
(in thousands)20202019
Make-whole derivative liability$4,847 $— 
Current portion of asset retirement obligations1,021 1,285 
Liabilities associated with assets held for sale508 5,248 
Other1,995 2,961 
Total other current liabilities$8,371 $9,494 
Asset Retirement Obligations
The Company has the obligation to plug and remediate its saltwater disposal wellsites when the assets are retired. This ARO includes plugging the well, removal of surface equipment, and remediation of soil contamination.
The following table presents activity in our asset retirement obligations:
Year Ended December 31,
(in thousands)20202019
Balance as of January 1, 2020$10,329 $2,587 
Additions 281 281 
Revision in estimate— 7,205 
Disposals(290)(124)
Expenditures(1,526)(671)
Accretion of discount1,924 1,051 
Balance as of December 31, 202010,718 10,329 
Less: current portion of asset retirement obligations(1,021)(1,285)
$9,697 $9,044 
Other Liabilities
The following table summarizes our other liabilities:
December 31,
(in thousands)20202019
Deferred compensation$6,533 $10,838 
Loans secured by company-owned life insurance6,013 3,622 
Deferred income tax liability424 — 
Other529 3,082 
Total other liabilities$13,499 $17,542