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SUPPLEMENTAL FINANCIAL STATEMENT DATA (Tables) | 12 Months Ended
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Dec. 30, 2022
SUPPLEMENTAL FINANCIAL STATEMENT DATA |
Schedule of reconciliation of cash and cash equivalents, and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, | ​ | December 31, | ​ | January 1,
​ |  | 2022 |  | 2021 |  | 2021
​ | ​ | (in thousands)
Cash and cash equivalents | ​ | $ | 8,806 | ​ | $ | 11,221 | ​ | $ | 28,405
Restricted cash | ​ |  | 10,679 | ​ |  | — | ​ |  | —
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows | ​ | $ | 19,485 | ​ | $ | 11,221 | ​ | $ | 28,405
​
Schedule of accounts receivable | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, | ​ | December 31,
​ |  | 2022 |  | 2021
​ | ​ | (in thousands)
Billed | ​ | $ | 60,842 | ​ | $ | 68,325
Unbilled (1) | ​ | ​ | 74,546 | ​ | ​ | 54,817
Contract retentions | ​ | ​ | 8,515 | ​ | ​ | 4,472
Other assets (2) | ​ | ​ | 9,583 | ​ | ​ | 12,630
​ | ​ | ​ | 153,486 | ​ | ​ | 140,244
Allowance for doubtful accounts | ​ | ​ | (640) | ​ | ​ | (1,115)
​ | ​ | $ | 152,846 | ​ | $ | 139,129
​
(1) | Unbilled portion represents contract assets which is presented separately from accounts receivable on the consolidated balance sheets.
(2) | Other assets represents a portion of receivables greater than one year from the normal course of business presented separately from current assets on the consolidated balance sheets.
​
Schedule of the movements in the allowance for doubtful accounts | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Fiscal Year
​ |  | 2022 |  | 2021 |  | 2020
​ | ​ | (in thousands)
Balance as of the beginning of the year | ​ | $ | 1,115 | ​ | $ | 2,127 | ​ | $ | 1,147
(Recovery of) provision for doubtful accounts | ​ |  | 243 | ​ |  | 102 | ​ |  | 1,329
Write-offs of uncollectible accounts | ​ |  | (718) | ​ |  | (1,224) | ​ |  | (388)
Fair value adjustment | ​ |  | — | ​ |  | 110 | ​ |  | 39
Balance as of the end of the year | ​ | $ | 640 | ​ | $ | 1,115 | ​ | $ | 2,127
​
Schedule of equipment and leasehold improvements | ​
​ | ​ | ​ | ​
Category |  | Estimated Useful Life
Furniture and fixtures |  | 5 | years
Computer hardware |  | 3 | years
Computer software |  | 3 | years
Automobiles and trucks |  | 3 | years
Field equipment |  | 5 | years
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, | ​ | December 31,
​ | ​ | 2022 |  | 2021
​ | ​ | (in thousands)
Furniture and fixtures | ​ | $ | 4,062 | ​ | $ | 4,070
Computer hardware and software | ​ |  | 35,635 | ​ |  | 26,425
Leasehold improvements | ​ |  | 3,097 | ​ |  | 3,011
Equipment under finance leases | ​ |  | 5,503 | ​ |  | 3,286
Automobiles, trucks, and field equipment | ​ |  | 3,134 | ​ |  | 3,099
Subtotal | ​ |  | 51,431 | ​ |  | 39,891
Accumulated depreciation and amortization | ​ |  | (28,894) | ​ |  | (23,134)
Equipment and leasehold improvements, net | ​ | $ | 22,537 | ​ | $ | 16,757
Schedule of accrued liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 30, | ​ | December 31,
​ |  | 2022 |  | 2021
​ | ​ | (in thousands)
Accrued subcontractor costs | ​ | $ | 28,374 | ​ | $ | 19,727
Rebate and other | ​ | ​ | 14,643 | ​ | ​ | 1,083
Accrued bonuses | ​ | ​ | 8,470 | ​ | ​ | 7,767
Accrued accounting and taxes | ​ |  | 2,712 | ​ |  | 2,194
Employee withholdings | ​ |  | 2,571 | ​ |  | 2,665
Compensation and payroll taxes | ​ |  | 2,340 | ​ |  | 2,244
Total accrued liabilities | ​ | $ | 59,110 | ​ | $ | 35,680
​

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