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v3.20.1

Segment Information - Percentage of Total Sales by Product Group (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Revenue from External Customer [Line Items] |  |
Revenues | $ 341,145 | $ 326,038
Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 75,844 | 75,446
Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 69,911 | 60,398
Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | 42,547 | 43,577
Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 41,052 | 40,726
Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 35,332 | 35,744
Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 27,428 | 30,128
Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 49,031 | $ 40,019
Sales |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 100.00% | 100.00%
Sales | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 22.00% | 23.00%
Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 21.00% | 19.00%
Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 13.00%
Sales | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 13.00%
Sales | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 10.00% | 11.00%
Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 8.00% | 9.00%
Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 15.00% | 12.00%
Americas |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 231,253 | $ 213,687
Americas | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 52,693 | 50,904
Americas | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 41,247 | 32,930
Americas | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | 35,113 | 35,064
Americas | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 27,648 | 26,991
Americas | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 27,555 | 27,836
Americas | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 17,697 | 17,961
Americas | Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 29,300 | $ 22,001
Americas | Sales |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 100.00% | 100.00%
Americas | Sales | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 23.00% | 24.00%
Americas | Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 18.00% | 15.00%
Americas | Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 15.00% | 16.00%
Americas | Sales | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 13.00%
Americas | Sales | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 13.00%
Americas | Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 8.00% | 8.00%
Americas | Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 11.00%
International |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 109,892 | $ 112,351
International | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 23,151 | 24,542
International | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 28,664 | 27,468
International | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | 7,434 | 8,513
International | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 13,404 | 13,735
International | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 7,777 | 7,908
International | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 9,731 | 12,167
International | Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 19,731 | $ 18,018
International | Sales |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 100.00% | 100.00%
International | Sales | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 21.00% | 22.00%
International | Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 26.00% | 24.00%
International | Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 7.00% | 8.00%
International | Sales | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 12.00%
International | Sales | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 7.00% | 7.00%
International | Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 9.00% | 11.00%
International | Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 18.00% | 16.00%

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