Note 4 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year ended December 31,
	2019		2018
Current
State	$	1,349	$	57,612
Federal		31		135,000
		1,380		192,612
Deferred
State		4,397		(6,211	)
Federal		29,544		(19,667	)
		33,941		(25,878	)
Income tax expense	$	35,321	$	166,734

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year ended December 31,
	2019			2018
Federal statutory rate		21.0	%		21.0	%
State taxes		6.9			8.2
Stock compensation		1.9			(0.5	)
Nondeductible lobbying expenses		17.5			3.8
Other Nondeductible/Nontaxable Items		6.4			1.2
Other, net		-			(0.2	)
Effective tax rate		53.7	%		33.5	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2019			2018
Intangible assets	$	(4,747	)	$	(9,497	)
Accrued warranty expense		-		$	39,837
Accrued payroll		10,875			37,872
Share-based compensation		(655	)		6,713
Net operating loss carryforwards		32,138			8,909
Other, net		4,562			5,069
Property and equipment		(32,584	)		(45,371	)
Valuation allowance		(8,907	)		(8,909	)
	$	682		$	34,623