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Property, Plant, and Equipment
 12 Months Ended
Mar. 31, 2023
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment Property, Plant, and Equipment
 
Consolidated property, plant, and equipment of the Company consisted of the following:
 March 31,
 20232022
Land and land improvements$5,467 $5,610 
Buildings60,899 57,549 
Machinery, equipment, and leasehold improvements249,379 249,793 
Construction in progress10,344 14,248 
 326,089 327,200 
Less accumulated depreciation231,729 229,274 
Net property, plant, and equipment$94,360 $97,926 

Depreciation expense was $15,946,000, $16,639,000, and $15,530,000 for the years ended March 31, 2023, 2022, and 2021, respectively.

Gross property, plant, and equipment includes capitalized software costs of $43,826,000 and $39,752,000 at March 31, 2023 and 2022, respectively. Accumulated depreciation includes accumulated amortization on capitalized software costs of $29,809,000 and $29,000,000 at March 31, 2023 and 2022, respectively. Amortization expense on capitalized software costs was $2,132,000, $2,399,000, and $3,639,000 during the years ended March 31, 2023, 2022, and 2021, respectively.