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Detail of Selected Balance Sheet Accounts
 6 Months Ended
Mar. 31, 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):
March 31, 2024September 30, 2023
Raw materials, parts and sub-assemblies$87,564 $68,631 
Work-in-progress1,204 1,379 
Provision for excess and obsolete inventories(6,693)(6,145)
Total inventories$82,075 $63,865 

Property, Plant and Equipment
Property, plant and equipment are summarized below (in thousands):
 March 31, 2024September 30, 2023
Land$21,606 $21,526 
Buildings and improvements124,070 121,454 
Machinery and equipment94,683 92,477 
Furniture and fixtures3,803 3,726 
Construction in process1,403 4,129 
$245,565 $243,312 
Less: Accumulated depreciation(148,910)(145,687)
Total property, plant and equipment, net$96,655 $97,625 

There were no assets under finance lease as of March 31, 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 March 31,Six months ended March 31,
 2024202320242023
Balance at beginning of period$3,680 $2,380 $3,305 $2,345 
Increase to warranty expense1,867 1,211 2,994 1,690 
Deduction for warranty charges(968)(882)(1,742)(1,335)
Change due to foreign currency translation(11)2 11 11 
Balance at end of period$4,568 $2,711 $4,568 $2,711