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Debt (Narratives) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020 | May 04, 2021
Line of Credit Facility [Line Items] |  |  |  |
New Credit Agreement 2017 | $ 545,000,000 |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 100,000,000 |  |  |
Outstanding letters of credit | 17,151,000 |  |  |
Payments of financing costs | 0 | $ 826,000 | $ 0 |
Carrying amount of the Company's revolving credit facility | 502,560,000 | 254,900,000 |  |
Long-term Debt, Current Maturities | 40,551,000 | 4,450,000 |  |
Line of Credit Facility, Fair Value of Amount Outstanding | 0 |  |  |
Gross balance of deferred costs | 6,323,000 |  |  |
Accumulated amortization balances | 898,000 | 8,744,000 |  |
Debt obligations | 2,434,000 |  |  |
Amount drawn on unsecured credit lines | 0 |  |  |
Debt Instrument, Unamortized Discount, Noncurrent | (5,425,000) | (5,946,000) |  |
Long-term Debt | $ (497,135,000) | (248,954,000) |  |
Long-term Debt, Term | 7 years |  |  |
2023 | $ 5,260,000 |  |  |
Line of Credit, Current | 100,000,000 |  |  |
Extinguishment of Debt, Amount | $ 14,803,000 | 0 | 0 |
Stock Issued During Period, Shares, New Issues | 4,312,500 |  |  |
Common Stock, Par or Stated Value Per Share |  |  |  | $ 48.00
Proceeds from Issuance or Sale of Equity | $ 207,000,000 | 0 | $ 0 |
Short-term Debt | 40,000,000 |  |  |
Deferred Costs | 14,690,000 |  |  |
Finance Lease, Liability, Undiscounted Excess Amount | $ 19,196,000 |  |  |
Lessee, Finance Lease, Term of Contract | 23 years |  |  |
Proceeds from Issuance of Common Stock | $ 207,000,000 |  |  |
Short-term Debt |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Finance Lease, Liability, Undiscounted Excess Amount | 544,000 |  |  |
Minimum |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Outstanding letters of credit | 849,000 |  |  |
Foreign Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 12,503,000 |  |  |
Outstanding borrowings | 9,135,000 |  |  |
Long-term Debt |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | 450,000,000 |  |  |
Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Gross balance of deferred costs | 4,027,000 | 3,615,000 |  |
Extinguishment of Debt, Amount | 326,000 |  |  |
Debt Issuance Costs, Gross | 4,027,000 |  |  |
Bridge Loan |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Extinguishment of Debt, Amount | 8,531,000 |  |  |
Secured Debt |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Extinguishment of Debt, Amount | 5,946,000 |  |  |
Debt Issuance Costs, Gross | 5,432,000 |  |  |
Secured Debt | Loans |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Issuance Costs, Gross | 892,000 |  |  |
Standby Letters of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Outstanding letters of credit | 16,302,000 |  |  |
STAHL [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Debt, Current | 5,260,000 |  |  |
STAHL [Member] | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | 445,000,000 |  |  |
Debt Issuance Costs, Gross | 977,000 |  |  |
STAHL [Member] | New Revolving Credit Facility |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | 100,000,000 |  |  |
Accumulated amortization balances | 805,000 | 2,313,000 |  |
STAHL [Member] | Other Current Liabilities [Member] |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Debt Instrument, Periodic Payment, Principal | 22,440,000 | $ 4,450,000 |  |
Dorner |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | 750,000,000 |  |  |
Dorner | Line of Credit |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | 100,000,000 |  |  |
Debt Issuance Costs, Gross | 3,050,000 |  |  |
Dorner | Bridge Loan |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |
Secured Long-term Debt, Noncurrent | $ 650,000,000 |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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- Definition Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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- Definition Average amount borrowed under the credit facility during the period. + References No definition available. + Details
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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + Details
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- Definition The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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