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Accounts Receivable and Allowance for Doubtful Accounts (Tables) | 6 Months Ended
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Jun. 30, 2020
Receivables [Abstract] |
Schedule of Accounts Receivable | Accounts receivable consists of the following (in thousands):
| June 30, 2020 |  | December 31, 2019
Trade accounts receivable | $ | 175,251 |  |  | $ | 133,238 |
Costs in excess of billings | 24,628 |  |  | 20,607 |
Total accounts receivables | 199,879 |  |  | 153,845 |
Less allowance for doubtful accounts and contract assets | (6,270) |  |  | (6,330) |
Accounts receivable | $ | 193,609 |  |  | $ | 147,515 |
The following table provides a roll-forward of the allowance for credit losses that is deducted from the amortized cost basis of accounts receivable to present the net amount expected to be collected.
Beginning balance as of January 1, 2020 | $ | 6,330 |
Adoption of ASU 2016-13, cumulative-effect adjustment to retained earnings | 387 |
Bad debt expense | 687 |
Write-off charged against the allowance and other adjustments | (1,134) |
Ending balance as of June 30, 2020 | $ | 6,270 |

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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=120391452&loc=d3e13212-122682 + Details
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