Note 1 - Nature of Operations, Organization and Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2020

Notes Tables

Schedule of Other Assets [Table Text Block]

(dollars in thousands)	2020		2019
Privilege fee	$	5,500	$	5,500
Less amortized costs		3,526		3,103
Privilege fee balance	$	1,974	$	2,397
Intangible gaming equipment	$	5,868	$	5,646
Less amortized costs		5,480		5,214
Intangible gaming equipment balance	$	388	$	432
JET autopilot intellectual property	$	1,417	$	1,417
Less amortized costs		1,147		1,053
JET autopilot intellectual property balance	$	270	$	364

Supplemental Type Certificates Capitalized Costs [Table Text Block]

(dollars in thousands)	2020		2019
Direct labor	$	2,830	$	2,670
Direct materials		3,961		3,345
Consultant costs		1,922		1,922
Overhead		4,799		4,524
		13,512		12,461
Less-amortized costs		7,029		6,054
STC balance	$	6,483	$	6,407

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

(in thousands, except share and per share data)	2020		2019
Net income attributable to Butler National Corporation	$	4,234	$	3,853
Weighted average common shares outstanding		68,622,527		64,511,608
Dilutive effect of non-qualified stock option plans		-		-
Weighted average common shares outstanding, assuming dilution		68,622,527		64,511,608
Potential common shares if all options were exercised and shares issued		68,622,527		64,511,608
Basic earnings per common share	$	0.06	$	0.06
Diluted earnings per common share	$	0.06	$	0.06