Note 2 - Allowance for Credit Losses: Troubled Debt Restructurings on Financing Receivables (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Current 12 months
Financing Receivable, Modifications, Number of Contracts	4,228	3,486	10,942	10,923
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 15,250,136	$ 13,124,761	$ 39,094,692	$ 37,614,503
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 14,631,833	$ 12,547,322	$ 37,477,962	$ 35,495,790
Current 12 months | Live Check Consumer Loans
Financing Receivable, Modifications, Number of Contracts	476	493	1,545	1,611
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 882,720	$ 884,141	$ 2,914,444	$ 2,704,218
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 867,401	$ 858,806	$ 2,854,145	$ 2,627,431
Current 12 months | Premier Consumer Loans
Financing Receivable, Modifications, Number of Contracts	116	131	329	356
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 683,833	$ 862,989	$ 1,958,784	$ 2,363,227
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 652,114	$ 824,689	$ 1,884,830	$ 2,277,349
Current 12 months | Other Consumer Loans
Financing Receivable, Modifications, Number of Contracts	3,454	2,669	8,515	8,368
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 12,474,462	$ 10,249,680	$ 30,642,643	$ 29,643,212
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 11,947,658	$ 9,781,560	$ 29,264,870	$ 27,807,993
Current 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts	8	7	24	30
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 110,854	$ 136,663	$ 280,574	$ 370,852
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 110,854	$ 127,506	$ 280,350	$ 360,893
Current 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	174	186	529	558
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 1,098,267	$ 991,288	$ 3,298,247	$ 2,532,994
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 1,053,806	$ 954,761	$ 3,193,767	$ 2,422,124
Previous 12 months
Financing Receivable, Modifications, Number of Contracts	1,315	994	3,234	3,622
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 3,147,691	$ 2,099,496	$ 7,576,437	$ 7,326,302
Previous 12 months | Live Check Consumer Loans
Financing Receivable, Modifications, Number of Contracts	233	210	632	790
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 430,947	$ 323,661	$ 1,201,511	$ 1,178,194
Previous 12 months | Premier Consumer Loans
Financing Receivable, Modifications, Number of Contracts	36	23	80	86
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 165,621	$ 125,227	$ 426,426	$ 475,673
Previous 12 months | Other Consumer Loans
Financing Receivable, Modifications, Number of Contracts	995	719	2,390	2,583
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 2,345,963	$ 1,524,065	$ 5,415,570	$ 5,274,119
Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts	0	1	0	2
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 0	$ 6,485	$ 0	$ 8,317
Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	51	41	132	161
Financing Receivable, Troubled Debt Restructuring, Premodification	$ 205,160	$ 120,058	$ 532,930	$ 389,999