Note 2 - Allowance For Loan Losses: Troubled Debt Restructurings on Financing Receivables (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Three months ended June 30, 2015
Financing Receivable, Modifications, Number of Contracts	2,135
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 4,803,363
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 4,468,355
Three months ended June 30, 2015 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts	2,052
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 4,531,163
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 4,204,960
Three months ended June 30, 2015 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts	17
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 142,923
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 142,812
Three months ended June 30, 2015 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	66
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 129,277
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 120,583
Three months ended June 30, 2014
Financing Receivable, Modifications, Number of Contracts		1,064
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 3,452,007
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 3,247,168
Three months ended June 30, 2014 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts		1,008
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 3,238,641
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 3,046,786
Three months ended June 30, 2014 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts		8
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 87,548
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 80,548
Three months ended June 30, 2014 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts		48
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 125,818
Financing Receivable, Modifications, Post-Modification Recorded Investment		$ 119,834
Six months ended June 30, 2015
Financing Receivable, Modifications, Number of Contracts			5,156
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 11,710,270
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 10,975,437
Six months ended June 30, 2015 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts			4,944
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 11,066,464
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 10,360,791
Six months ended June 30, 2015 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts			36
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 310,569
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 304,547
Six months ended June 30, 2015 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts			176
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 333,237
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 310,099
Six months ended June 30, 2014
Financing Receivable, Modifications, Number of Contracts				2,823
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 9,137,553
Financing Receivable, Modifications, Post-Modification Recorded Investment				$ 8,487,269
Six months ended June 30, 2014 | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts				2,659
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 8,455,145
Financing Receivable, Modifications, Post-Modification Recorded Investment				$ 7,826,633
Six months ended June 30, 2014 | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts				44
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 382,487
Financing Receivable, Modifications, Post-Modification Recorded Investment				$ 375,431
Six months ended June 30, 2014 | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts				120
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 299,921
Financing Receivable, Modifications, Post-Modification Recorded Investment				$ 285,205
Three months ended June 30, 2015, Previous 12 months
Financing Receivable, Modifications, Number of Contracts	707
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 973,130
Three months ended June 30, 2015, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts	686
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 944,944
Three months ended June 30, 2015, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts	21
Financing Receivable, Modifications, Pre-Modification Recorded Investment	$ 28,186
Three months ended June 30, 2014, Previous 12 months
Financing Receivable, Modifications, Number of Contracts		219
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 390,722
Three months ended June 30, 2014, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts		204
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 370,132
Three months ended June 30, 2014, Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts		2
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 3,768
Three months ended June 30, 2014, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts		13
Financing Receivable, Modifications, Pre-Modification Recorded Investment		$ 16,822
Six months ended June 30, 2015, Previous 12 months
Financing Receivable, Modifications, Number of Contracts			1,390
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 1,953,789
Six months ended June 30, 2015, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts			1,338
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 1,891,431
Six months ended June 30, 2015, Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts			1
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 1,000
Six months ended June 30, 2015, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts			51
Financing Receivable, Modifications, Pre-Modification Recorded Investment			$ 61,358
Six months ended June 30, 2014, Previous 12 months
Financing Receivable, Modifications, Number of Contracts				538
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 963,839
Six months ended June 30, 2014, Previous 12 months | Cosumer Loans
Financing Receivable, Modifications, Number of Contracts				512
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 930,070
Six months ended June 30, 2014, Previous 12 months | Real Estate Loans
Financing Receivable, Modifications, Number of Contracts				3
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 7,294
Six months ended June 30, 2014, Previous 12 months | Sales Finance Contracts
Financing Receivable, Modifications, Number of Contracts				23
Financing Receivable, Modifications, Pre-Modification Recorded Investment				$ 26,475