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v3.19.1

Segment Information - Percentage of Total Sales by Product Group (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Revenue from External Customer [Line Items] |  |
Revenues | $ 326,038 | $ 325,894
Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 75,446 | 74,618
Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 60,398 | 60,931
Concentration risk percentage | 19.00% |
Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 43,577 | 44,484
Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 40,726 | 42,227
Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 35,744 | 34,956
Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 30,128 | 25,705
Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 40,019 | $ 42,973
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 | 23.00% | 23.00%
Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage |  | 19.00%
Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 13.00% | 14.00%
Sales | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 13.00% | 13.00%
Sales | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 11.00% | 11.00%
Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 9.00% | 8.00%
Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 12.00% | 12.00%
Americas |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 213,687 | $ 209,129
Americas | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 50,904 | 49,333
Americas | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 32,930 | 32,526
Americas | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | 35,064 | 34,754
Americas | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 26,991 | 28,762
Americas | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 27,836 | 27,841
Americas | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 17,961 | 14,109
Americas | Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 22,001 | $ 21,804
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 | 24.00% | 24.00%
Americas | Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 15.00% | 15.00%
Americas | Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 16.00% | 17.00%
Americas | Sales | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 13.00% | 14.00%
Americas | Sales | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 13.00% | 13.00%
Americas | Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 8.00% | 7.00%
Americas | Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 11.00% | 10.00%
International |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 112,351 | $ 116,765
International | Breathing Apparatus |  |
Revenue from External Customer [Line Items] |  |
Revenues | 24,542 | 25,285
International | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 27,468 | 28,405
International | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Revenues | 8,513 | 9,730
International | Portable Gas Detection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 13,735 | 13,465
International | Industrial Head Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 7,908 | 7,115
International | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Revenues | 12,167 | 11,596
International | Other |  |
Revenue from External Customer [Line Items] |  |
Revenues | $ 18,018 | $ 21,169
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 | 22.00% | 22.00%
International | Sales | Fixed Gas & Flame Detection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 24.00% | 24.00%
International | Sales | Firefighter Helmets & Protective Apparel |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 8.00% | 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% | 6.00%
International | Sales | Fall Protection |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 11.00% | 10.00%
International | Sales | Other |  |
Revenue from External Customer [Line Items] |  |
Concentration risk percentage | 16.00% | 18.00%

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