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Sale of Non-Digital Division Assets (Notes)	12 Months Ended
Sale of Non-Digital Division Assets (Notes)	Apr. 27, 2019
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]	Note 6. Sale of Non-Digital Division Assets During fiscal 2018, we sold our non-digital division assets, primarily consisting of inventory, non-digital manufacturing equipment, patented and unpatented technology and know-how, customer lists, and backlog, net of warranty obligations and accounts payable with a net book value of $517. We recorded a gain of $1,267 on the disposal, which is included in cost of sales in the International business unit during fiscal 2018. During fiscal 2017, we chose to transition out of the non-digital market in our International business unit. At that time, we identified certain related technology and customer lists with carrying values deemed to not be recoverable, and we recognized an impairment loss of $830. This was included in cost of sales and selling expense in the consolidated statement of operations during fiscal 2017 in the International business unit. The impairment loss was calculated based on expected future cash flows using Level 3 inputs. The Level 3 inputs included weighted average estimated future cash flows from non-digital product sales and estimated selling value of non-digital intellectual property.