Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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-Publisher FASB
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Gross carrying amount before accumulated amortization as of the balance sheet date to an asset acquired in a business combination representing a favorable existing relationship with customers having a finite beneficial life.

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Acquisitions and Dispositions Intangible assets acquired (Details) - USD ($) $ in Thousands	Nov. 01, 2018	Jun. 01, 2018	Jan. 29, 2018
BWI
Finite-Lived Intangible Assets [Line Items]
Customer relationships	$ 1,200
Trademarks and trade names	900
Patents	0
Other	870
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill	$ 2,970
Graham & Maiman
Finite-Lived Intangible Assets [Line Items]
Customer relationships		$ 2,400
Trademarks and trade names		350
Patents		0
Other		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		$ 2,750
DW3
Finite-Lived Intangible Assets [Line Items]
Customer relationships			$ 49,554
Trademarks and trade names			11,785
Patents			1,420
Other			114
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 62,873
Customer relationships \| BWI
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships	10 years
Customer relationships \| Graham & Maiman
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships		10 years
Customer relationships \| DW3
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships			10 years
Trademarks and trade names \| BWI
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships	10 years
Trademarks and trade names \| Graham & Maiman
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships		1 year 6 months
Trademarks and trade names \| DW3
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships			10 years
Patents \| DW3
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships			10 years
Other \| BWI
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships	2 years 2 months 12 days
Other \| DW3
Finite-Lived Intangible Assets [Line Items]
Amortization period for acquired customer relationships			3 years