Revenue and Segment Information - Revenue, Income, Goodwill and Identifiable Assets by Location (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net Sales	$ 396,214	$ 347,550	$ 758,219	$ 658,739
Income from Operations	40,916	33,590	70,035	59,028
Goodwill	196,068		196,068		$ 202,406
Total Identifiable Assets	1,332,376		1,332,376		1,205,742
Vegetation Management
Segment Reporting Information [Line Items]
Net Sales	255,003	214,665	476,009	398,549
Income from Operations	32,796	22,664	51,130	39,414
Goodwill	127,568		127,568		132,963
Total Identifiable Assets	889,067		889,067		789,838
Industrial Equipment
Segment Reporting Information [Line Items]
Net Sales	141,211	132,885	282,210	260,190
Income from Operations	8,120	$ 10,926	18,905	$ 19,614
Goodwill	68,500		68,500		69,443
Total Identifiable Assets	$ 443,309		$ 443,309		$ 415,904