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Short-Term and Long-Term Debt, Including Finance Leases - Credit Facility (Narrative) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |
Credit Facility | $ 238,604,000 | $ 174,594,000 |
Credit facility, amount outstanding | $ 211,810,000 |  |
Line of credit facility, collateral, capital stock, percent | 100.00% |  |
Debt instrument, maximum senior secured leverage ratio | 4.50 |  |
Short-term borrowings | $ 27,048,000 | 10,704,000 |
Interest expense, debt | 10,966,000 | 6,983,000 | $ 8,187,000
Interest paid | 9,500,000 | 5,631,000 | $ 7,152,000
Australian Borrower |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, current borrowing capacity | $ 75,000,000 |  |
Maximum |  |  |
Debt Instrument [Line Items] |  |  |
Lessee leasing arrangements, finance leases, term of contract | 24 months |  |
Minimum |  |  |
Debt Instrument [Line Items] |  |  |
Lessee leasing arrangements, finance leases, term of contract | 60 months |  |
Letter of credit subcommitment |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, current borrowing capacity | $ 125,000,000 |  |
Line of credit facility, remaining borrowing capacity | 8,777,000 |  |
Credit Facility |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, current borrowing capacity | $ 450,000,000 |  |
Debt instrument, basis spread on variable rate (percent) | 0.50% |  |
Line of credit facility, remaining borrowing capacity | $ 205,235,000 |  |
Short-term borrowings | $ 26,966,000 | $ 10,616,000 |
Weighted average interest rates | 3.30% | 2.20% | 2.80%
Credit Facility | UK Borrower |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, current borrowing capacity | $ 250,000,000 |  |
Credit Facility | Canadian Borrower |  |  |
Debt Instrument [Line Items] |  |  |
Line of credit facility, current borrowing capacity | $ 125,000,000 |  |
Credit Facility | Maximum | Base Rate |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (percent) | 0.625% |  |
Credit Facility | Maximum | Eurocurrency Rate |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (percent) | 1.625% |  |
Credit Facility | Minimum | Base Rate |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (percent) | 0.00% |  |
Credit Facility | Minimum | Eurocurrency Rate |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, basis spread on variable rate (percent) | 1.00% |  |

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- Definition Line Of Credit Facility, Collateral, Capital Stock, Percent + References No definition available. + Details
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- Definition Line of Credit Facility, Required Minimum Leverage Ratio + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69F -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI https://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 + Details
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3536-108585 + 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 https://asc.fasb.org/extlink&oid=128292326&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 https://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 https://asc.fasb.org/extlink&oid=126897435&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 https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + 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(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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