Product Warranties (Tables)

9 Months Ended

Jun. 30, 2021

Guarantees and Product Warranties [Abstract]

Schedule of product warranty liability

A reconciliation of the activity related to the accrued warranty, including both the current and long‑term portions, is as follows:

	Current Product Warranties				Non-Current Product Warranties
	Nine Months Ended June 30,				Nine Months Ended June 30,
	2021		2020		2021		2020
Balance at beginning of the period	$	6,115	$	4,922	$	1,724	$	2,332
Warranty provision for sales	5,680		2,496		1,577		481
Settlement of warranty claims	(3,826)		(3,243)		(701)		(1,298)
Amounts related to sale of the Memcor product line	—		795		—		136
Foreign currency translation and other	94		276		29		(51)
Balance at end of the period	$	8,063	$	5,246	$	2,629	$	1,600