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Cash Flow Information - Non-Cash Investing and Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 27, 2019	Apr. 28, 2018	Apr. 29, 2017
Supplemental Cash Flow Elements [Abstract]
Demonstration equipment transferred to inventory	$ 97	$ 72	$ 218
Purchases of property and equipment included in accounts payable	1,106	1,983	2,524
Contributions of common stock under the ESPP	1,650	1,682	840
Contingent consideration related to acquisition	$ 0	$ 0	$ 31

X

- Definition

Value of demonstration equipment transferred to inventory in noncash transaction during the reporting period.

+ References

No definition available.

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X

- Definition

Future cash outflow to pay for purchases of fixed assets that have occurred.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
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- Definition

The fair value of stock issued in noncash financing activities.

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- Definition

A device of credit enhancement where a part of the purchase price for the receivable/ payable is retained to serve as a cash collateral.

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