Table:
|  | Fiscal Year Ended |  |
| --- | --- | --- |
|  | August 31, 2019 |  |
|  | As reported | Balance without the adoption of ASU 2014-09 |
| Net revenue(1) | $25,282,320 | $24,864,754 |
| Cost of revenue(2) | $23,368,919 | $23,057,603 |
| Operating income | $701,356 | $595,105 |
| Income tax expense | $161,230 | $164,054 |
| Net income | $289,474 | $180,399 |
Paragraphs:
The following table presents the effect of the adoption of the new revenue guidance on the Consolidated Statement of Operations for the fiscal year ended August 31, 2019 (in thousands):
(1) Differences primarily relate to the timing of revenue recognition for over-time customers and to the recovery of fulfillment costs.
(2) Differences primarily relate to the timing of cost recognition for over-time customers and the recognition of fulfillment costs.
Question:
What do the differences in amount of net revenue between as reported and balance without the adoption of ASU 2014-09 primarily relate to?
Answer: the timing of revenue recognition for over-time customers and to the recovery of fulfillment costs.