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v3.10.0.1

Segment Information - Percentage of Total Sales by Product Group (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 331,096 | $ 296,129 | $ 996,320 | $ 850,669
Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 80,424 | 66,175 | 230,324 | 204,813
Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 64,951 | 61,394 | 189,482 | 172,350
Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 39,405 | 35,496 | 122,939 | 109,016
Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 36,938 | 34,598 | 111,532 | 101,471
Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 27,939 | 24,730 | 79,696 | 72,185
Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 35,821 | 31,967 | 126,981 | 60,434
Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 45,618 | $ 41,769 | $ 135,366 | $ 130,400
Sales |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00%
Sales | Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 24.00% | 22.00% | 23.00% | 24.00%
Sales | Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 20.00% | 21.00% | 19.00% | 20.00%
Sales | Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 12.00% | 12.00% | 12.00% | 13.00%
Sales | Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 11.00% | 12.00% | 11.00% | 12.00%
Sales | Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 8.00% | 8.00% | 8.00% | 8.00%
Sales | Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 11.00% | 11.00% | 13.00% | 7.00%
Sales | Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 14.00% | 14.00% | 14.00% | 16.00%
Americas |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 209,343 | $ 186,898 | $ 633,812 | $ 528,426
Americas | Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 50,282 | 40,876 | 146,293 | 134,835
Americas | Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 33,803 | 32,409 | 99,459 | 91,048
Americas | Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 26,755 | 23,786 | 82,654 | 73,469
Americas | Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 28,909 | 27,539 | 87,901 | 80,503
Americas | Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 16,465 | 13,727 | 45,668 | 39,217
Americas | Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 30,373 | 25,345 | 102,906 | 37,123
Americas | Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 22,756 | $ 23,216 | $ 68,931 | $ 72,231
Americas | Sales |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00%
Americas | Sales | Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 24.00% | 22.00% | 23.00% | 26.00%
Americas | Sales | Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 16.00% | 17.00% | 16.00% | 17.00%
Americas | Sales | Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 13.00% | 13.00% | 13.00% | 14.00%
Americas | Sales | Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 14.00% | 15.00% | 14.00% | 15.00%
Americas | Sales | Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 8.00% | 7.00% | 7.00% | 7.00%
Americas | Sales | Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 15.00% | 14.00% | 16.00% | 7.00%
Americas | Sales | Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 10.00% | 12.00% | 11.00% | 14.00%
International |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 121,753 | $ 109,231 | $ 362,508 | $ 322,243
International | Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 30,142 | 25,299 | 84,031 | 69,978
International | Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 31,148 | 28,985 | 90,023 | 81,302
International | Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 12,650 | 11,710 | 40,285 | 35,547
International | Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 8,029 | 7,059 | 23,631 | 20,968
International | Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 11,474 | 11,003 | 34,028 | 32,968
International | Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | 5,448 | 6,622 | 24,075 | 23,311
International | Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Revenues | $ 22,862 | $ 18,553 | $ 66,435 | $ 58,169
International | Sales |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 100.00% | 100.00% | 100.00% | 100.00%
International | Sales | Breathing Apparatus |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 25.00% | 23.00% | 23.00% | 22.00%
International | Sales | Fixed Gas & Flame Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 26.00% | 27.00% | 25.00% | 25.00%
International | Sales | Portable Gas Detection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 10.00% | 11.00% | 11.00% | 11.00%
International | Sales | Industrial Head Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 7.00% | 6.00% | 7.00% | 7.00%
International | Sales | Fall Protection |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 9.00% | 10.00% | 9.00% | 10.00%
International | Sales | Firefighter Helmets & Protective Apparel |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 4.00% | 6.00% | 7.00% | 7.00%
International | Sales | Other |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Concentration risk percentage | 19.00% | 17.00% | 18.00% | 18.00%

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