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Accounts Receivable and Unbilled Revenue, Net | 12 Months Ended
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Dec. 27, 2019
Receivables Net Current [Abstract] |
Accounts Receivable and Unbilled Revenue, Net | 3. Accounts Receivable and Unbilled Revenue, Net Accounts receivable and unbilled revenue, net, consists of the following (in thousands):
|  | December 27, |  |  | December 28, |
|  | 2019 |  |  | 2018 |
Accounts receivable |  | $ | 35,884 |  |  | $ | 35,794 |
Unbilled revenue |  |  | 14,637 |  |  |  | 20,454 |
Allowance for doubtful accounts |  |  | (743 | ) |  |  | (1,441 | )
|  | $ | 49,778 |  |  | $ | 54,807 |
Accounts receivable as of December 27, 2019 and December 28, 2018, is net of uncollected advanced billings. Unbilled revenue as of December 27, 2019 and December 28, 2018, includes recognized recoverable costs and accrued profits on contracts for which billings had not been presented to clients.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
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