Acquisitions (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 178,556	$ 258,674
Current Assets	12,343
Property, Plant, and Equipment	8,088
Goodwill - tax deductible	29,808	33,183
Goodwill Acquired	111,369
Intangibles	69,044
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets	4,104
Current Liabilities	12,097
Goodwill and intangible assets	180,413
Other assets and deferred charges	14,295
Goodwill Acquired During Period, Non-deductible for Income Tax	81,561	124,691
Patents [Member]
Business Acquisition [Line Items]
Intangibles	$ 6,006
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years
Trademarks [Member]
Business Acquisition [Line Items]
Intangibles	$ 6,666
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Customer-Related Intangible Assets
Business Acquisition [Line Items]
Intangibles	$ 33,692
Unpatented Technologies [Member]
Business Acquisition [Line Items]
Intangibles	22,680
Systech [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		161,830
Goodwill Acquired		91,493
Intangibles		76,100
Soft-Pak [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		45,500
Goodwill - tax deductible		33,183
Intangibles		12,800
Em-tec [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		30,396
Goodwill - tax deductible		19,572
Intangibles		8,344
Blue Bite
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	29,035
Goodwill Acquired	19,378
Intangibles	13,250
Quantex
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	23,896
Goodwill Acquired	14,476
Intangibles	11,034
AvaLAN
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	34,144
Goodwill Acquired	26,679
Intangibles	14,630
Espy
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	60,611
Goodwill Acquired	29,808
Intangibles	20,200
CDS Visual
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	29,347
Goodwill Acquired	20,337
Intangibles	$ 9,930
Solaris [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		18,605
Goodwill - tax deductible		11,693
Intangibles		$ 3,280
Minimum [Member] \| Customer-Related Intangible Assets
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years
Minimum [Member] \| Unpatented Technologies [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Maximum [Member] \| Customer-Related Intangible Assets
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Maximum [Member] \| Unpatented Technologies [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	12 years

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Goodwill Acquired During Period, Non-deductible for Income Tax

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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Amount of assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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