Property, plant and equipment consists of the following as of June 30, 2021 and 2020 (in thousands):


	As of June 30, 2021
	Cost		Accumulated Depreciation		Net
Land	$	1,012	$	—	$	1,012
Buildings and building improvements	29,599		(17,085)		12,514
Machinery and equipment	107,649		(85,183)		22,466
Total	$	138,260	$	(102,268)	$	35,992


	As of June 30, 2020
	Cost		Accumulated Depreciation		Net
Land	$	1,186	$	—	$	1,186
Buildings and building improvements	43,641		(29,966)		13,675
Machinery and equipment	115,563		(93,334)		22,229
Total	$	160,390	$	(123,300)	$	37,090

Any finance leases as of June 30, 2021 and June 30, 2020 are de minimis. Depreciation expense was $5.1 million, $5.2 million and $5.0 million for the years ended June 30, 2021, 2020 and 2019, respectively.