Acquisitions (Schedule of Acquired Intangible Assets) (Details) - USD ($) $ in Thousands	Aug. 30, 2019	Aug. 21, 2018
Apeks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 5,061
Apeks | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair value , indefinite-lived intangible assets acquired	900
Apeks | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 793
Estimated Useful Life	9 years
Apeks | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired	$ 3,368
Estimated Useful Life	9 years
SolarBOS
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 1,450
SolarBOS | Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 300
Estimated Useful Life		3 years
SolarBOS | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 450
Estimated Useful Life		9 years
SolarBOS | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Fair Value, finite-lived intangible assets acquired		$ 700
Estimated Useful Life		9 years