Property, Plant, and Equipment

12 Months Ended

Apr. 30, 2022

Property Plant And Equipment [Abstract]

Property, Plant, and Equipment

6. Property, Plant, and Equipment

The following table summarizes property, plant, and equipment as of April 30, 2022 and 2021 (in thousands):

	April 30, 2022			April 30, 2021
Machinery and equipment	$	17,664		$	15,041
Computer and other equipment		2,095			1,071
Leasehold improvements		2,364			2,273
		22,123			18,385
Less: Accumulated depreciation and amortization		(12,635	)		(10,454	)
		9,488			7,931
Construction in progress		1,133			1,784
Total property, plant, and equipment, net	$	10,621		$	9,715

Depreciation expense for the fiscal years ended April 30, 2022, 2021, and 2020 was $2.3 million, $3.0 million, and $3.4 million, respectively.

The following table summarizes depreciation and amortization expense, which includes amortization of intangibles, by line item for the fiscal years ended April 30, 2022, 2021, and 2020 (in thousands):

	For the Years Ended April 30,
	2022		2021		2020
Cost of sales	$	1,299	$	1,016	$	1,837
Research and development		203		43		83
Selling, marketing, and distribution		510		114		175
General and administrative (a)		14,955		18,653		21,814
Total depreciation and amortization	$	16,967	$	19,826	$	23,909

General and administrative expenses included $14.4 million, $16.8 million, and $18.6 million of amortization for the fiscal years ended April 30, 2022, 2021, and 2020, respectively, which were recorded as a result of our acquisitions.