Fair Value Measurements - (Details) $ in Thousands	Oct. 26, 2019 USD ($)
Fair Value Measurement
Financial liabilities	$ 4,344
Contingent consideration
Fair Value Measurement
Financial liabilities	4,344
Recurring basis | Significant unobservable inputs (Level 3)
Fair Value Measurement
Financial liabilities	4,344
Recurring basis | Significant unobservable inputs (Level 3) | Contingent consideration
Fair Value Measurement
Financial liabilities	$ 4,344