Inventories (Tables)

12 Months Ended

Oct. 31, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following at October 31, 2020 and 2019 (in thousands):

	October 31,
	2020		2019
Raw materials	$	33,298	$	32,818
Finished goods and work in process	32,347		35,538
Supplies and other	2,020		2,593
Total	67,665		70,949
Less: Inventory reserves	6,484		3,790
Inventories, net	$	61,181	$	67,159

Inventory Reserve Rollforward

The changes in our inventory reserve accounts were as follows (in thousands):

	Year Ended October 31,
	2020		2019		2018
Beginning balance as of November 1, 2019, 2018 and 2017, respectively	$	3,790	$	4,375	$	4,620
Charged to cost of sales	2,713		341		1,201
Write-offs	—		(939)		(1,415)
Other	(19)		13		(31)
Balance as of October 31,	$	6,484	$	3,790	$	4,375