Segment Information - Percentage of Total Sales by Product Group (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Revenue from External Customer [Line Items]
Revenues	$ 421,340	$ 413,302
Fire Service
Revenue from External Customer [Line Items]
Revenues	150,616	163,694
Detection
Revenue from External Customer [Line Items]
Revenues	161,070	139,216
Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 109,654	$ 110,392
Revenue Benchmark | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100.00%	100.00%
Revenue Benchmark | Fire Service | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	36.00%	40.00%
Revenue Benchmark | Detection | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	38.00%	34.00%
Revenue Benchmark | Industrial PPE and Other | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	26.00%	26.00%
Americas
Revenue from External Customer [Line Items]
Revenues	$ 293,160	$ 295,539
Americas | Fire Service
Revenue from External Customer [Line Items]
Revenues	105,907	122,252
Americas | Detection
Revenue from External Customer [Line Items]
Revenues	109,891	96,295
Americas | Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 77,362	$ 76,992
Americas | Revenue Benchmark | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100.00%	100.00%
Americas | Revenue Benchmark | Fire Service | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	36.00%	41.00%
Americas | Revenue Benchmark | Detection | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	37.00%	33.00%
Americas | Revenue Benchmark | Industrial PPE and Other | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	27.00%	26.00%
International
Revenue from External Customer [Line Items]
Revenues	$ 128,180	$ 117,763
International | Fire Service
Revenue from External Customer [Line Items]
Revenues	44,709	41,442
International | Detection
Revenue from External Customer [Line Items]
Revenues	51,179	42,921
International | Industrial PPE and Other
Revenue from External Customer [Line Items]
Revenues	$ 32,292	$ 33,400
International | Revenue Benchmark | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	100.00%	100.00%
International | Revenue Benchmark | Fire Service | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	35.00%	35.00%
International | Revenue Benchmark | Detection | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	40.00%	36.00%
International | Revenue Benchmark | Industrial PPE and Other | Product Concentration Risk
Revenue from External Customer [Line Items]
Concentration risk percentage	25.00%	29.00%