Correction (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 28, 2019	Sep. 29, 2018
Total classification changes required related to these adjustments
Accounts receivable allowances	$ (160)	$ 233
Accounts receivable	3,626	(8,939)
Unbilled services	(14,582)	(9,976)
Net cash used in operating activities	$ (19,907)	(8,394)
As previously reported
Total classification changes required related to these adjustments
Accounts receivable allowances		884
Accounts receivable		(9,391)
Unbilled services		(10,175)
Net cash used in operating activities		$ (8,394)

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- Definition

The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.

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Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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