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

12 Months Ended

Apr. 30, 2021

Notes Tables

Schedule of Other Assets [Table Text Block]

(dollars in thousands)	2021		2020
Privilege fee	$	5,500	$	5,500
Less amortized costs		3,949		3,526
Privilege fee balance	$	1,551	$	1,974
Intangible gaming equipment	$	5,927	$	5,868
Less amortized costs		5,696		5,480
Intangible gaming equipment balance	$	231	$	388
JET autopilot intellectual property	$	1,417	$	1,417
Less amortized costs		1,241		1,147
JET autopilot intellectual property balance	$	176	$	270

Supplemental Type Certificates Capitalized Costs [Table Text Block]

(dollars in thousands)	2021		2020
Direct labor	$	3,387	$	2,830
Direct materials		4,108		3,961
Consultant costs		2,983		1,922
Overhead		5,774		4,799
		16,252		13,512
Less-amortized costs		8,041		7,029
STC balance	$	8,211	$	6,483

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

(in thousands, except share and per share data)	2021		2020
Net income attributable to Butler National Corporation	$	1,433	$	4,234
Weighted average common shares outstanding		74,144,957		68,622,527
Dilutive effect of non-qualified stock option plans		-		-
Weighted average common shares outstanding, assuming dilution		74,144,957		68,622,527
Potential common shares if all options were exercised and shares issued		74,144,957		68,622,527
Basic earnings per common share	$	0.02	$	0.06
Diluted earnings per common share	$	0.02	$	0.06