Note 12 - Industry Segmentation and Sales by Major Customer (Tables)

12 Months Ended

Apr. 30, 2019

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Year ended April 30, 2019	Professional Services		Aerospace Products		Consolidated
Total revenues	$	32,017	$	26,693	$	58,710
Depreciation and amortization		1,068		778		1,846
Operating income		1,480		3,798		5,278
Capital expenditures, net		1,023		3,962		4,985
Interest expense		-		-		(248	)
Refund of sales/use tax		-		-		1,995
Income before taxes		-		-		7,025
Income tax expense		-		-		1,375
Net income attributable to Butler National Corporation		-		-		3,853
Identifiable assets, net		22,432		26,470		48,902

Year ended April 30, 2018	Professional Services		Aerospace Products		Consolidated
Total revenues	$	31,283	$	16,977	$	48,260
Depreciation and amortization		1,256		504		1,760
Operating income		1,721		402		2,123
Capital expenditures, net		631		1,658		2,289
Interest expense		-		-		(331	)
Other income (expense)		-		-		4
Income before taxes		-		-		1,796
Income tax expense		-		-		540
Net income attributable to Butler National Corporation		-		-		341
Identifiable assets, net		21,538		19,893		41,431

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

	2019			2018
Aerospace Products – one customer		15.1	%		12.3	%
Professional Services		-			-