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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2018
Receivables [Abstract] |
Summary of Accounts Receivable | A summary of accounts receivable is as follows (in thousands):
| December 31, |  |
| 2018 |  | 2017
Oil, natural gas and NGL sales | $ | 31,780 |  | $ | 35,301
Joint interest billing | 13,083 |  | 29,505
Oil and natural gas services | 604 |  | 639
Other | 1,331 |  | 7,106
Total accounts receivable | 46,798 |  | 72,551
Less: allowance for doubtful accounts | (1,295) |  | (1,274)
Total accounts receivable, net | $ | 45,503 |  | $ | 71,277
Balance and Activity in Allowance for Doubtful Accounts | The following table presents the balance and activity in the allowance for doubtful accounts for the years ended December 31, 2018 and 2017, the Successor 2016 Period and the Predecessor 2016 Period (in thousands):
| Successor |  |  |  |  |  |  | Predecessor
| Year Ended December 31, 2018 |  | Year Ended December 31, 2017 |  | Period from October 2, 2016 through December 31, 2016 |  |  | Period from January 1, 2016 through October 1, 2016
Beginning balance | $ | 1,274 |  | $ | 880 |  | $ | — |  |  | $ | 4,847
Additions charged to costs and expenses(1) | 758 |  | 397 |  | 880 |  |  | 16,695
Deductions(2) | (737) |  | (3) |  | — |  |  | (751)
Impact of fresh start accounting | — |  | — |  | — |  |  | (20,791)
Ending balance | $ | 1,295 |  | $ | 1,274 |  | $ | 880 |  |  | $ | —
____________________ 1.The Predecessor 2016 Period includes a $16.7 million addition for a joint interest account receivable after determining that future collection was doubtful when the joint interest owner filed for bankruptcy. 2.Deductions represent the write-off of receivables and collections of amounts for which an allowance had previously been established.

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Allowance for Doubtful Accounts. + References No definition available. + Details
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