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Detail of Selected Balance Sheet Accounts
 9 Months Ended
Jun. 30, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Detail of Selected Balance Sheet Accounts Detail of Selected Balance Sheet Accounts
Inventories
The components of inventories are summarized below (in thousands):
June 30, 2024September 30, 2023
Raw materials, parts and sub-assemblies$90,839 $68,631 
Work-in-progress1,362 1,379 
Provision for excess and obsolete inventories(7,062)(6,145)
Total inventories$85,139 $63,865 

Property, Plant and Equipment
Property, plant and equipment are summarized below (in thousands):
 June 30, 2024September 30, 2023
Land$21,563 $21,526 
Buildings and improvements123,687 121,454 
Machinery and equipment95,064 92,477 
Furniture and fixtures3,795 3,726 
Construction in process2,427 4,129 
$246,536 $243,312 
Less: Accumulated depreciation(150,068)(145,687)
Total property, plant and equipment, net$96,468 $97,625 

There were no assets under finance lease as of June 30, 2024 or September 30, 2023.

Intangible Asset
In December 2023, we acquired intellectual property for a total consideration of $0.5 million, of which $250 thousand was paid in cash at the acquisition date.

Accrued Product Warranty
Activity in our product warranty accrual consisted of the following (in thousands):
 Three months ended June 30,Nine months ended June 30,
 2024202320242023
Balance at beginning of period$4,568 $2,711 $3,305 $2,345 
Increase to warranty expense2,077 1,241 5,071 2,931 
Deduction for warranty charges(1,412)(760)(3,154)(2,095)
Change due to foreign currency translation(7)10 4 21 
Balance at end of period$5,226 $3,202 $5,226 $3,202