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Debt (Schedule Of Short-term And Long-term Borrowings) (Details) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 USD ($) | May 31, 2021 USD ($) agreement | Aug. 31, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |
Total Borrowings |  |  | $ 117,298,000 | $ 113,898,000
Short-term portion of borrowings |  |  | (800,000) | (800,000)
Long-term borrowings |  |  | $ 116,498,000 | 113,098,000
Number of agreements | agreement |  |  | 2 |
Line of credit |  | $ 50,000,000.0 |  |
Series A Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance | [1] |  | Nov. 15, 2017 |
Maturity date |  |  | Nov. 15, 2032 |
Interest rate |  |  | 3.39% |
Total Borrowings | [1] |  | $ 17,200,000 | 18,000,000
Principal payment frequency of periodic payment |  |  | semi-annually |
Periodic payment amount |  |  | $ 400,000 |
Periodic principal maturity |  |  | May 15, 2032 |
Remaining principal payment |  |  | $ 8,400,000 |
Series B Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance | [2] |  | Sep. 30, 2020 |
Maturity date | [2] |  | Nov. 15, 2027 |
Interest rate |  |  | 2.50% |
Total Borrowings | [2] |  | $ 26,000,000 |
Principal amount |  | 26,000,000.0 |  |
Series C Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Issuance | [2] |  | Sep. 30, 2020 |
Maturity date | [2] |  | Nov. 15, 2030 |
Interest rate |  |  | 2.69% |
Total Borrowings | [2] |  | $ 26,000,000 |
Principal amount |  | $ 26,000,000.0 |  |
Series B and Series C Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal payment frequency of periodic payment |  |  | semi-annually |
Date of first interest payment |  | 2021-05 |  |
Credit Agreement - Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maturity date | [2],[3] |  | Sep. 30, 2025 |
Total Borrowings | [2],[3] |  | $ 48,098,000 | $ 95,898,000
Minimum [Member] | Series A Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maturity year |  |  | 2021 |
Maximum [Member] | Series A Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maturity year |  |  | 2032 |
[1] | Principal payments are required semi-annually in May and November of each year in equal installments of $0.4 million through May 15, 2032. The remaining outstanding principal in the amount of $8.4 million will become due on November 15, 2032.
[2] | On September 30, 2020, the Company refinanced $50.0 million of existing draws under its Credit Agreement in the United States through the issuance of two new $26.0 million notes (“Series B Notes” and “Series C Notes”, respectively) under its Note Agreement. Interest on these new notes is payable semi-annually in May and November of each year with no principal due until the maturity date. The first interest payment on both the Series B and Series C Notes was paid in May 2021.
[3] | The Company has the ability to refinance any draw under the line of credit with successive short-term borrowings through the maturity date. Outstanding draws for which management has both the ability and intent to refinance with successive short-term borrowings for a period of at least twelve months are classified as long-term. As of May 31, 2021, the entire balance on this facility is classified as long-term and only contains amounts denominated in Euros and Pound Sterling. Euro and Pound Sterling denominated draws will fluctuate in U.S. Dollars from period to period due to changes in foreign currency exchange rates.

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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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