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Finance Receivables - Activity in allowance for credit losses (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2021 | Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Provision for credit losses | $ 250 | $ 650 | $ 3,050 | $ 3,300 | $ 3,919 | $ 4,597 | $ 4,000 | $ 4,385 | $ 7,250 | $ 16,901
Finance receivables |  |  |  |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  | 11,162 |  |  |  | 16,932 | 11,162 | 16,932
Provision for credit losses |  |  |  |  |  |  |  |  | 7,250 | 16,901
Charge-offs |  |  |  |  |  |  |  |  | (17,823) | (29,837)
Recoveries |  |  |  |  |  |  |  |  | 5,565 | 7,166
Balance at end of year | 6,154 |  |  |  | 11,162 |  |  |  | 6,154 | 11,162
Finance receivables | Indirect |  |  |  |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  | 10,433 |  |  |  | 16,575 | 10,433 | 16,575
Provision for credit losses |  |  |  |  |  |  |  |  | 7,250 | 16,096
Charge-offs |  |  |  |  |  |  |  |  | (17,141) | (29,174)
Recoveries |  |  |  |  |  |  |  |  | 5,459 | 6,936
Balance at end of year | 6,001 |  |  |  | 10,433 |  |  |  | 6,001 | 10,433
Finance receivables | Direct |  |  |  |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |  |  |  |
Balance at beginning of year |  |  |  | $ 729 |  |  |  | $ 357 | 729 | 357
Provision for credit losses |  |  |  |  |  |  |  |  |  | 805
Charge-offs |  |  |  |  |  |  |  |  | (682) | (663)
Recoveries |  |  |  |  |  |  |  |  | 106 | 230
Balance at end of year | $ 153 |  |  |  | $ 729 |  |  |  | $ 153 | $ 729

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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