Property, Plant and Equipment and Leases

12 Months Ended

Apr. 30, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

6.           Property, Plant and Equipment, Net

Property, plant and equipment, net at April 30, 2020 and 2019, consisted of the following (in thousands):

	2020			2019
Buildings and building improvements	$	2,692		$	2,692
Machinery, equipment and furniture		57,916			57,157
		60,608			59,849
Less, accumulated depreciation and amortization		(49,341	)		(46,811	)
	$	11,267		$	13,038

Depreciation and amortization expense for the years ended April 30, 2020 and 2019 was $3.3 million and $2.8 million, respectively.

Maintenance and repairs charged to operations for the years ended April 30, 2020 and 2019 was approximately $706,000 and $309,000, respectively.