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Acquisitions Acquisitions - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 15, 2020 | Feb. 27, 2020
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | $ 193,540 | $ 67,090 | $ 0 |  |
Net sales | 769,970 | 723,530 | 705,030 |  |
Goodwill | 303,970 | 334,640 | 316,650 |  |
Rapak [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | 11,400 |  |  |  |
Net sales |  | 30,000 |  |  |
RSA Engineered Products [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | 83,700 |  |  |  |
Net sales |  | 30,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  |  | $ 2,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities |  |  |  |  | 8,700
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Net Working Capital |  |  |  |  | 10,100
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  |  | 36,900
Goodwill |  |  |  |  | $ 43,300
Taplast S.p.A. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | 44,700 |  |  |
Net sales |  |  | 32,000 |  |
Plastic Srl [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 22,400 |  |  |
Net sales |  |  | $ 12,000 |  |
Affaba & Ferrari Srl [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | 98,400 |  |  |  |
Net sales | $ 34,000 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  | $ 17,400 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities |  |  |  | 12,600 |
Business Combination, Recognized Identifiable Assets and Liabilities Assumed, Net Working Capital |  |  |  | 9,400 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill |  |  |  | 35,100 |
Goodwill |  |  |  | $ 49,100 |

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