Note 1 - Description of Business and Significant Accounting Policies - Information About Deposit-type Contracts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Balance at beginning of period	$ 16,626,218
Receipts on deposit-type contracts	3,535,094	$ 4,048,626
Interest credited	593,794	579,038
Withdrawals on deposit-type contracts	(1,358,492)	(1,450,062)
Balance at end of period	19,396,614	16,626,218
Balance at beginning of period	2,757,404	2,963,057
Deferred cost of reinsurance, American Life block acquisition		(35,934)
Capitalization of commissions, sales and issue expenses	328,488	285,187
Amortization net of interest	(433,218)	(454,906)
Balance at end of period	2,652,674	2,757,404
Deferred Annuity Deposit-type Contracts [Member]
Balance at beginning of period	16,201,166	12,931,900
Receipts on deposit-type contracts	3,517,203	4,004,619
Interest credited	583,038	566,999
Withdrawals on deposit-type contracts	(1,238,266)	(1,338,011)
Balance at end of period	19,063,141	16,201,166
Deferred Annuity Deposit-type Contracts [Member] | GWLIC [Member]
Acquisition of Great Western Life		35,659
Premium Deposit Fund Deposit-type Contracts [Member]
Balance at beginning of period	425,052	516,991
Receipts on deposit-type contracts	17,891	44,007
Interest credited	10,756	12,039
Withdrawals on deposit-type contracts	(120,226)	(112,051)
Assumed from American Life & Security Corp		(35,934)
Balance at end of period	$ 333,473	$ 425,052