Credit Losses on Financial Assets Measured at Amortized Cost - Summary of Automobile Loans Held for Investment by Credit Score (Details) - Automobile Loan - USD ($) $ in Thousands	Nov. 30, 2022	Nov. 30, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2022 / 2021	$ 399,610	$ 402,195
2021 / 2020	277,149	148,852
2020 / 2019	82,742	132,028
2019 / 2018	70,992	72,686
2018 / 2017	34,106	32,968
Prior Years	14,627	12,958
Total	$ 879,226	$ 801,687
Percent	100.00%	100.00%
Credit scores of 680 and above
Financing Receivable, Credit Quality Indicator [Line Items]
2022 / 2021	$ 53,700	$ 71,724
2021 / 2020	46,668	31,215
2020 / 2019	17,276	31,143
2019 / 2018	16,560	16,695
2018 / 2017	7,631	3,642
Prior Years	1,378	805
Total	$ 143,213	$ 155,224
Percent	16.30%	19.40%
Credit scores between 620 to 679
Financing Receivable, Credit Quality Indicator [Line Items]
2022 / 2021	$ 170,220	$ 198,097
2021 / 2020	132,528	79,315
2020 / 2019	44,095	66,247
2019 / 2018	35,393	37,714
2018 / 2017	17,635	17,637
Prior Years	7,647	6,509
Total	$ 407,518	$ 405,519
Percent	46.30%	50.60%
Credit scores below 620
Financing Receivable, Credit Quality Indicator [Line Items]
2022 / 2021	$ 175,690	$ 132,374
2021 / 2020	97,953	38,322
2020 / 2019	21,371	34,638
2019 / 2018	19,039	18,277
2018 / 2017	8,840	11,689
Prior Years	5,602	5,644
Total	$ 328,495	$ 240,944
Percent	37.40%	30.00%