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Debt (Details) $ in Thousands |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 31, 2017 USD ($) | Dec. 31, 2020 USD ($) Debt / EBITDA Interest / Debt | Oct. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Oct. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Apr. 30, 2017 USD ($)
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 527,036 |  | $ 598,674 |  |  |
Less debt fees |  |  | (143) |  | (175) |  |  |
Less current portion |  |  | (8,889) |  | 0 |  |  |
Total long-term debt |  |  | 518,004 |  | 598,499 |  |  |
Accounts receivable securitization program commitment amount |  |  |  |  |  | $ 65,000 | $ 70,000 |
Maximum borrowing capacity, secured loan |  |  | 65,000 |  |  |  |  |
Credit facility, amount renewed |  |  |  | $ 65,000 |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
2021 |  |  | 73,892 |  |  |  |  |
2022 |  |  | 100,481 |  |  |  |  |
2023 |  |  | 156,414 |  |  |  |  |
2024 |  |  | 88,210 |  |  |  |  |
2025 |  |  | 59,176 |  |  |  |  |
Thereafter |  |  | 48,863 |  |  |  |  |
Total long-term debt maturities |  |  | 527,036 |  | 598,674 |  |  |
Debt covenants [Abstract] |  |  |  |  |  |  |  |
Stand-by letters of credit outstanding |  |  | 2,700 |  | 2,600 |  |  |
Short-term borrowings [Abstract] |  |  |  |  |  |  |  |
Short-term borrowings |  |  | 9,247 |  | 20,612 |  |  |
Current maturities of long-term debt |  |  | $ 8,889 |  | $ 0 |  |  |
Weighted-average interest rates on short-term borrowings |  |  | 1.36% |  | 2.53% |  |  |
Minimum [Member] |  |  |  |  |  |  |  |
Debt covenants [Abstract] |  |  |  |  |  |  |  |
Interest coverage, actual | Interest / Debt |  |  | 6.61 |  |  |  |  |
Interest coverage, required | Interest / Debt |  |  | 2.00 |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |
Debt covenants [Abstract] |  |  |  |  |  |  |  |
Debt to EBITDA, actual | Debt / EBITDA | [1] |  | 2.40 |  |  |  |  |
Debt to EBITDA, required | Debt / EBITDA | [1] |  | 3.50 |  |  |  |  |
LIBOR [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Interest rate |  |  | 1.00% |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 83,324 |  | $ 134,393 |  |  |
Average interest rate |  |  | 1.35% |  | 1.44% |  |  |
Maximum borrowing capacity, secured loan |  | $ 350,000 |  |  |  |  |  |
Long term debt additional disclosures [Abstract] |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  | $ 329,000 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 83,324 |  | $ 134,393 |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Maturity date |  |  | Nov. 30, 2020 |  |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Maturity date |  |  | May 31, 2022 |  |  |  |  |
Other Line of Credit Facility [Member] |  |  |  |  |  |  |  |
Long term debt additional disclosures [Abstract] |  |  |  |  |  |  |  |
Remaining borrowing capacity |  |  | $ 45,800 |  |  |  |  |
U.S. Credit Facilities [Member] |  |  |  |  |  |  |  |
Short-term borrowings [Abstract] |  |  |  |  |  |  |  |
Short-term borrowings |  |  | 138 |  | 20,280 |  |  |
Loans of Foreign Subsidiaries [Member] |  |  |  |  |  |  |  |
Short-term borrowings [Abstract] |  |  |  |  |  |  |  |
Short-term borrowings |  |  | 220 |  | 332 |  |  |
3.66% Senior Notes due November 2023 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 75,000 |  | 75,000 |  |  |
Interest rate, stated percentage |  |  | 3.66% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2023 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 75,000 |  | 75,000 |  |  |
3.65% Senior Notes due May 2024 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 27,000 |  | 27,000 |  |  |
Interest rate, stated percentage |  |  | 3.65% |  |  |  |  |
Maturity date |  |  | May 31, 2024 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 27,000 |  | 27,000 |  |  |
4.19% Senior Notes due November 2025 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 25,000 |  | 25,000 |  |  |
Interest rate, stated percentage |  |  | 4.19% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2025 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 25,000 |  | 25,000 |  |  |
1.85% Euro-denominated Senior Notes due November 2022 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 81,672 |  | 74,968 |  |  |
Interest rate, stated percentage |  |  | 1.85% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2022 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 81,672 |  | 74,968 |  |  |
3.06% Euro-denominated Senior Notes due November 2023 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 46,722 |  | 42,887 |  |  |
Interest rate, stated percentage |  |  | 3.06% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2023 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 46,722 |  | 42,887 |  |  |
1.27% Euro-denominated Senior Notes due May 2024 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 61,080 |  | 56,066 |  |  |
Interest rate, stated percentage |  |  | 1.27% |  |  |  |  |
Maturity date |  |  | May 31, 2024 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 61,080 |  | 56,066 |  |  |
1.71% Euro-denominated Senior Notes due May 2027 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 48,864 |  | 44,853 |  |  |
Interest rate, stated percentage |  |  | 1.71% |  |  |  |  |
Maturity date |  |  | May 31, 2027 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 48,864 |  | 44,853 |  |  |
2.53% British Pound-denominated Notes due November 2023 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 34,176 |  | 33,143 |  |  |
Interest rate, stated percentage |  |  | 2.53% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2023 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 34,176 |  | 33,143 |  |  |
2.76% British Pound-denominated Notes due November 2025 [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 34,176 |  | 33,143 |  |  |
Interest rate, stated percentage |  |  | 2.76% |  |  |  |  |
Maturity date |  |  | Nov. 30, 2025 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 34,176 |  | 33,143 |  |  |
Term Loan [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | $ 8,375 |  | $ 51,438 |  |  |
Average interest rate |  |  | 2.20% |  | 3.83% |  |  |
Maximum borrowing capacity, secured loan |  | 145,000 |  |  |  |  |  | $ 115,000
Credit facility increased amount |  | $ 30,000 |  |  |  |  |  |
Credit facility, borrowings outstanding |  |  | $ 8,400 |  |  |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | 8,375 |  | $ 51,438 |  |  |
Various Other Notes [Member] |  |  |  |  |  |  |  |
Schedule of long term debt [Abstract] |  |  |  |  |  |  |  |
Long term debt |  |  | 1,647 |  | 783 |  |  |
Aggregate amounts of contractual maturities of long-term debt [Abstract] |  |  |  |  |  |  |  |
Total long-term debt maturities |  |  | $ 1,647 |  | $ 783 |  |  |
[1] | Debt to EBITDA is defined in the Company’s debt covenants as total funded debt divided by the Company’s consolidated operating income excluding non-operating gains and losses and depreciation and amortization.

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- Definition Ratio of the amount of allowed debt as compared to EBITDA as defined in the loan agreements. + References No definition available. + Details
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- Definition Ratio of the amount of allowed debt as compared to total equity as defined in the loan agreements. + References No definition available. + Details
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- Definition Covenant agreement related to the number of times EBITDA or some other income related item covers the interest expense. + References No definition available. + Details
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- Definition The amount of proceeds owed to the reporting entity by a third party for the sale of trade receivables. + References No definition available. + Details
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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=120520924&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 Contractual interest rate for funds borrowed, under the debt 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount, after 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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -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 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + 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 Amount of increase (decrease) of the credit facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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