Note 12 - Income Tax Reconciliation (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Taxes at statutory federal income tax rate			$ 3,559,000	$ 2,359,000
Taxes at statutory federal income tax rate			35.00%	34.00%
Graduated tax rates			$ (100,000)	$ 0
Graduated tax rates			(1.00%)	0.00%
State income tax—net of federal benefits			$ 361,000	$ 226,000
State income tax—net of federal benefits			3.60%	3.30%
Valuation allowance—net			$ (897,000)	$ 0
Valuation allowance—net			(8.80%)	0.00%
Earnings on life insurance policies			$ (274,000)	$ (251,000)
Earnings on life insurance policies			(2.70%)	(3.60%)
Nontaxable investments			$ (284,000)	$ (302,000)
Nontaxable investments			(2.80%)	(4.40%)
Other—net			$ (81,000)	$ 106,000
Other—net			(0.80%)	1.50%
Total	$ 847,000	$ 1,253,000	$ 2,284,000	$ 2,138,000
Total			22.50%	30.80%