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Accounts Receivable | 12 Months Ended
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Dec. 31, 2023
Receivables [Abstract] |
Accounts Receivable | Accounts Receivable Accounts receivable consisted of the following at December 31:
(in thousands) |  | 2023 |  | 2022
Contract receivables |  | $ | 516,142 |  |  | $ | 471,724 |
Other |  | 7,738 |  |  | 2,892 |
|  | 523,880 |  |  | 474,616 |
Less: allowance for doubtful accounts |  | (1,987) |  |  | (2,073) |
|  | $ | 521,893 |  |  | $ | 472,543 |
The roll-forward of activity in the allowance for doubtful accounts was as follows for the years ended December 31:
(in thousands) |  | 2023 |  | 2022 |  | 2021
Balance at beginning of period |  | $ | 2,073 |  |  | $ | 2,441 |  |  | $ | 1,696 |
Less: reduction in (provision for) allowances |  | 85 |  |  | 320 |  |  | (764) |
Less: write offs, net of recoveries |  | 3 |  |  | 45 |  |  | 19 |
Change in foreign currency translation |  | 2 |  |  | (3) |  |  | — |
Balance at end of period |  | $ | 1,987 |  |  | $ | 2,073 |  |  | $ | 2,441 |

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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
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- References No definition available. + Details
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