LOANS ISSUED - Finance receivable - Credit Quality Classification (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	$ 744,907	$ 803,432
Year one	463,585	580,595
Year two	431,413	41,307
Year three	30,645	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	1,670,550	1,425,334
Mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	336,535	241,848
Year one	186,816	458,401
Year two	370,588	41,063
Year three	30,591	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	924,530	741,312
Mortgage loans \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	336,051	240,974
Year one	184,610	454,933
Year two	367,918	40,784
Year three	29,876	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	918,455	736,691
Mortgage loans \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	410	676
Year one	1,361	2,415
Year two	1,402	111
Year three	340	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	3,513	3,202
Mortgage loans \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	74	198
Year one	845	1,053
Year two	1,268	168
Year three	375	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	2,562	1,419
Uncollateralized bank customer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	110,094	210,612
Year one	120,583	34,568
Year two	18,771	8
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	249,448	245,188
Uncollateralized bank customer loans \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	108,045	200,211
Year one	103,320	30,337
Year two	15,590	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	226,955	230,548
Uncollateralized bank customer loans \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,011	4,715
Year one	3,557	1,072
Year two	663	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	5,231	5,787
Uncollateralized bank customer loans \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	1,038	5,686
Year one	13,706	3,159
Year two	2,518	8
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	17,262	8,853
Right of claim for purchased retail loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	151,237	130,291
Year one	30,702	15,694
Year two	1,688	167
Year three	8	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	183,635	146,152
Right of claim for purchased retail loans \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	151,237	130,291
Year one	30,702	15,694
Year two	1,688	167
Year three	8	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	183,635	146,152
Right of claim for purchased retail loans \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	0	0
Right of claim for purchased retail loans \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	0	0
Car loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	5,974	196,305
Year one	116,459	66,403
Year two	33,907	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	156,340	262,708
Car loans \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	5,974	193,302
Year one	110,871	55,427
Year two	26,014	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	142,859	248,729
Car loans \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1,590
Year one	1,603	2,232
Year two	836	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	2,439	3,822
Car loans \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	1,413
Year one	3,985	8,744
Year two	7,057	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	11,042	10,157
Collateralized bank customer loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	140,835	21,972
Year one	7,788	327
Year two	136	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	148,759	22,299
Collateralized bank customer loans \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	138,761	21,796
Year one	7,498	327
Year two	136	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	146,395	22,123
Collateralized bank customer loans \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	2,020	89
Year one	73	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	2,093	89
Collateralized bank customer loans \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	54	87
Year one	217	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	271	87
Subordinated loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year		0
Year one		5,037
Year two		0
Year three		0
Year four		0
Prior		0
Revolving loans		0
Amount Outstanding		5,037
Subordinated loan \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year		0
Year one		5,037
Year two		0
Year three		0
Year four		0
Prior		0
Revolving loans		0
Amount Outstanding		5,037
Subordinated loan \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year		0
Year one		0
Year two		0
Year three		0
Year four		0
Prior		0
Revolving loans		0
Amount Outstanding		0
Subordinated loan \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year		0
Year one		0
Year two		0
Year three		0
Year four		0
Prior		0
Revolving loans		0
Amount Outstanding		0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	232	2,404
Year one	1,237	165
Year two	6,323	69
Year three	46	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	7,838	2,638
Other \| that are not credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	232	2,395
Year one	1,229	165
Year two	6,323	69
Year three	46	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	7,830	2,629
Other \| with significant increase in credit risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	0
Year one	0	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	0	0
Other \| that are credit impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current fiscal year	0	9
Year one	8	0
Year two	0	0
Year three	0	0
Year four	0	0
Prior	0	0
Revolving loans	0	0
Amount Outstanding	$ 8	$ 9

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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