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Fair Value Measurements - Level 3 Reconciliation (Details)
$ in Thousands
6 Months Ended
Oct. 27, 2018
USD ($)
Reconciliation of Level 3 liabilities recorded at fair value using significant unobservable inputs  
Balance at beginning of the year $ 344
Acquisitions 3,300
Translation adjustment (23)
Balance at end of the year $ 3,621