Asset-Backed Financing - Servicing Activities (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019	Dec. 31, 2019
Transfers and Servicing [Abstract]
Current unpaid principal balance - On-balance sheet serviced retail motorcycle finance receivables	$ 6,362,139	$ 6,441,261	$ 6,362,139	$ 6,441,261	$ 6,274,551
Current unpaid balance - Off-balance sheet retail motorcycle finance receivables	0	54,699	0	54,699	35,197
Current unpaid balance - Total serviced retail motorcycle finance receivables	6,362,139	6,495,960	6,362,139	6,495,960	6,309,748
Delinquent unpaid balance - On-balance sheet serviced retail motorcycle finance receivables	95,841	190,208	95,841	190,208	244,498
Delinquent unpaid balance - Off-balance sheet serviced retail motorcycle finance receivables	0	1,065	0	1,065	885
Delinquent unpaid balance - Total serviced retail motorcycle finance receivables	95,841	191,273	95,841	191,273	$ 245,383
Credit losses, net of recoveries - On-balance sheet serviced retail motorcycle finance receivables	15,660	22,259	58,768	55,763
Credit losses, net of recoveries - Off-balance sheet serviced retail motorcycle finance receivables	0	161	13	392
Credit losses, net of recoveries - Total serviced retail motorcycle finance receivables	$ 15,660	$ 22,420	$ 58,781	$ 56,155

Assets And Any Other Financial Assets Managed Together, Delinquent Amount At End Of Period

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- Definition

Assets Securitized Or Asset-backed Financing Arrangement, Assets And Any Other Financial Assets Managed Together, Net Credit Losses During Period

+ References

No definition available.

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- Definition

Amount of net credit losses charged off.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (e)(5)
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- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
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- Definition

This is the amount of the financial instruments that are considered delinquent (past due) at the end of the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Net credit losses are charge-offs and are based on total loans outstanding during the period.

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- Definition

Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that have been derecognized. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(2)
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- Definition

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 50
-Paragraph 4
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- Definition

Amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction that continue to be recognized in the statement of financial position. Includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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