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Note 4 - Accounts Receivable | 12 Months Ended
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Dec. 31, 2016
Notes to Financial Statements |
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] | 4. ACCOUNTS RECEIVABLE The Company’s accounts receivable are comprised as follows:
|  | December 31, 2016 |  |  | January 2, 2016 |
Billed |  | $ | 34,463 |  |  | $ | 40,117 |
Accrued and unbilled |  |  | 6,894 |  |  |  | 4,939 |
Work-in-progress |  |  | 5,215 |  |  |  | 7,322 |
Allowance for sales discounts and doubtful accounts |  |  | (1,402 | ) |  |  | (1,432 | )
Accounts receivable, net |  | $ | 45,170 |  |  | $ | 50,946 |
Unbilled receivables primarily represent revenues earned whereby those services are ready to be billed as of the balance sheet date. Work-in-process primarily represents revenues earned under contracts which the Company contractually invoices at future dates.

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