Note 2 - Allowance For Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details)	3 Months Ended
	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)
Three months ended March 31, 2016
Financing Receivable, Modifications, Number of Contracts	2,626
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 5,315,601
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 5,017,960
Three months ended March 31, 2016 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts	2,513
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 4,985,866
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 4,701,838
Three months ended March 31, 2016 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts	11
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 119,675
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 119,675
Three months ended March 31, 2016 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	102
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 210,060
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 196,447
Three months ended March 31, 2015
Financing Receivable, Modifications, Number of Contracts		1,173
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 3,172,947
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 3,025,314
Three months ended March 31, 2015 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts		1,110
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 2,968,080
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 2,823,413
Three months ended March 31, 2015 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts		13
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 108,315
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 108,265
Three months ended March 31, 2015 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts		50
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 96,552
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 93,636
Three months ended March 31, 2016, Previous 12 months
Financing Receivable, Modifications, Number of Contracts	807
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,205,355
Three months ended March 31, 2016, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts	769
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 1,150,219
Three months ended March 31, 2016, Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 855
Three months ended March 31, 2016, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	37
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 54,281
Three months ended March 31, 2015, Previous 12 months
Financing Receivable, Modifications, Number of Contracts		201
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 340,982
Three months ended March 31, 2015, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts		193
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 333,099
Three months ended March 31, 2015, Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts		1
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 1,000
Three months ended March 31, 2015, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts		7
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 6,883