Acquisitions, Goodwill And Other Intangible Assets (Schedule of Business Acquisitions) (Details) - USD ($) $ in Thousands		1 Months Ended									12 Months Ended
	Dec. 31, 2021	Oct. 31, 2021	Sep. 30, 2021	Apr. 30, 2021	Dec. 31, 2020	Nov. 30, 2020	Jan. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Aug. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition
Cash consideration											$ 194,107	$ 182,130	$ 447,764
Net Assets Acquired
Goodwill	$ 543,180				$ 454,728			$ 351,114			543,180	454,728	$ 351,114
Measurement Period Adjustments
Goodwill (not tax deductible)											9,496	10,362
Stampede
Business Acquisition
Cash consideration		$ 39,704
Total fair value of consideration given		39,700
Net Assets Acquired
Identifiable intangible assets		31,504
Total fair value of net assets acquired		31,504
Goodwill		$ 8,200
Challenger
Business Acquisition
Holdback payment						$ 4,500
Total fair value of consideration given						$ 35,000
Polyplastic
Business Acquisition
Cash consideration							$ 95,800
CURT
Business Acquisition
Total fair value of consideration given								$ 336,600
PWR-ARM
Business Acquisition
Holdback payment									$ 5,000
Total fair value of consideration given									$ 45,000
Lewmar Marine Limited
Business Acquisition
Total fair value of consideration given										$ 43,200
Furrion
Business Acquisition
Cash consideration			$ 50,534
Effective settlement of Receivable from Furrion			34,956
Discounted value of fixed deferred consideration			61,191
Holdback payment			31,300
Total fair value of consideration given			146,681
Net Assets Acquired
Other assets acquired and liabilities assumed, net			(9,518)
Total fair value of net assets acquired			100,682
Goodwill			45,999
Schaudt
Business Acquisition
Total fair value of consideration given				$ 29,383
Net Assets Acquired
Net tangible assets				(186)
Total fair value of net assets acquired				15,776
Goodwill				13,607
Ranch Hand
Business Acquisition
Cash consideration				56,857
Contingent consideration				3,000
Total fair value of consideration given				59,857
Net Assets Acquired
Net tangible assets				16,923
Total fair value of net assets acquired				50,523
Goodwill				9,334
Veada
Business Acquisition
Cash consideration	56,619				56,760
Holdback payment	12,219				12,219
Total fair value of consideration given	68,838				68,979
Net Assets Acquired
Net tangible assets	12,413				8,864						12,413	8,864
Total fair value of net assets acquired	35,913				46,114						35,913	46,114
Goodwill	32,925				22,865						32,925	22,865
Measurement Period Adjustments
Total value of consideration given											(141)
Other tangible assets											3,549
Total fair value of net assets acquired											(10,201)
Goodwill (not tax deductible)											10,060
Customer relationships | Furrion
Net Assets Acquired
Identifiable intangible assets			66,300
Customer relationships | Schaudt
Net Assets Acquired
Identifiable intangible assets				13,322
Customer relationships | Ranch Hand
Net Assets Acquired
Identifiable intangible assets				24,500
Customer relationships | Veada
Net Assets Acquired
Identifiable intangible assets	18,600				30,000						18,600	30,000
Measurement Period Adjustments
Intangible assets											(11,400)
Other intangible assets | Furrion
Net Assets Acquired
Identifiable intangible assets			$ 43,900
Other intangible assets | Schaudt
Net Assets Acquired
Identifiable intangible assets				2,640
Other intangible assets | Ranch Hand
Net Assets Acquired
Identifiable intangible assets				$ 9,100
Other intangible assets | Veada
Net Assets Acquired
Identifiable intangible assets	$ 4,900				$ 7,250						4,900	$ 7,250
Measurement Period Adjustments
Intangible assets											$ (2,350)