Property, Plant, and Equipment (Details) - USD ($)	12 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Other Depreciation and Amortization	$ 15,946,000	$ 16,639,000	$ 15,530,000
Land and land improvements	5,467,000	5,610,000
Buildings	60,899,000	57,549,000
Machinery, equipment, and leasehold improvements	249,379,000	249,793,000
Construction in progress	10,344,000	14,248,000
Property, plant, and equipment	326,089,000	327,200,000
Less accumulated depreciation	231,729,000	229,274,000
Net property, plant, and equipment	94,360,000	97,926,000
Capitalized Computer Software, Gross	43,826,000	39,752,000
Capital Computer Software Accumulated Amortization	29,809,000	29,000,000
Capitalized Computer Software Depreciation Expense	$ 2,132,000	$ 2,399,000	$ 3,639,000

-- None. No documentation exists for this element. --

No definition available.

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- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

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- Definition

Amount of expense charged against earnings to allocate the cost of tangible and intangible assets over their remaining economic lives, classified as other.

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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