Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
REVENUE:
Revenues from customers	$ 18,132	$ 14,612	$ 55,369	$ 43,572
COSTS AND EXPENSES:
Marketing and advertising	1,338	877	3,809	2,723
Employee benefits	565	546	1,686	1,696
Depreciation and amortization	699	740	2,106	2,858
General, administrative and other	2,082	2,379	6,038	5,795
Total costs and expenses	13,730	12,744	42,202	39,889
OPERATING INCOME	4,402	1,868	13,167	3,683
OTHER INCOME (EXPENSE):
Interest expense	(725)	(758)	(1,979)	(2,411)
Other	0	7	0	7
Total other income (expense)	(725)	(751)	97	(2,404)
INCOME BEFORE INCOME TAXES	3,677	1,117	13,264	1,279
Forgiveness of debt			2,001	0
Gain on sale of airplane			75	0
PROVISION FOR INCOME TAXES
Provision for income taxes	993	185	2,418	299
Net income (loss)	2,684	932	10,612	980
Net income attributable to former noncontrolling interest in BHCMC, LLC	0	(429)	(1,872)	(171)
NET INCOME ATTRIBUTABLE TO BUTLER NATIONAL CORPORATION	$ 2,684	$ 503	$ 8,740	$ 809
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.04	$ 0.01	$ 0.12	$ 0.01
WEIGHTED AVERAGE SHARES USED IN PER SHARE CALCULATION (in shares)	75,343,068	74,033,347	75,357,966	74,183,488
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.04	$ 0.01	$ 0.12	$ 0.01
WEIGHTED AVERAGE SHARES USED IN PER SHARE CALCULATION (in shares)	75,343,068	74,033,347	75,357,966	74,183,488
Deferred income tax			$ 234	$ 0
Professional Services [Member]
REVENUE:
Revenues from customers	$ 9,416	$ 7,901	28,817	20,901
COSTS AND EXPENSES:
Cost of services and products	3,799	3,485	11,377	10,313
Aerospace Products [Member]
REVENUE:
Revenues from customers	8,716	6,711	26,552	22,671
COSTS AND EXPENSES:
Cost of services and products	$ 5,247	$ 4,717	$ 17,186	$ 16,504