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v3.20.4

Short-Term and Long-Term Debt, Including Finance Leases - Credit Facility (Narrative) (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) quarter | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 18, 2020 USD ($)
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest period | 1 month |  |  |
Line of credit facility, collateral, capital stock, percent | 100.00% |  |  |
Number of quarters | quarter | 4 |  |  |
Short-term borrowings | $ 1,837,000 | $ 28,546,000 |  |
Interest expense, debt | 8,187,000 | 11,519,000 | $ 11,399,000 |
Interest paid | $ 7,152,000 | 10,470,000 | $ 10,381,000 |
Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Lessee leasing arrangements, finance leases, term of contract | 60 months |  |  |
Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Lessee leasing arrangements, finance leases, term of contract | 24 months |  |  |
Letter of credit subcommitment |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, current borrowing capacity | $ 100,000,000 |  |  |
Line of credit facility, remaining borrowing capacity | 11,512,000 |  |  |
Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, current borrowing capacity | 450,000,000 |  |  |
Credit Facility | 112,855,000 | 176,877,000 |  |
Line of credit facility, remaining borrowing capacity | 325,653,000 |  |  |
Short-term borrowings | $ 1,570,000 | $ 28,531,000 |  |
Credit Facility | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate (percent) | 1.00% |  |  |
Credit Facility | UK Borrower |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, current borrowing capacity | $ 185,000,000 |  |  |
Credit Facility | Canadian Borrower |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, current borrowing capacity | 75,000,000 |  |  |
Credit Facility | Australian Borrower |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Line of credit facility, current borrowing capacity | $ 32,500,000 |  |  |
Credit Facility | Maximum | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate (percent) | 2.10% |  |  |
Credit Facility | Maximum | London Interbank Offered Rate (LIBOR) | Base Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate (percent) | 1.10% |  |  |
Credit Facility | Minimum | London Interbank Offered Rate (LIBOR) |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate (percent) | 1.30% |  |  |
Credit Facility | Minimum | London Interbank Offered Rate (LIBOR) | Base Rate |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, basis spread on variable rate (percent) | 0.30% |  |  |
Third Amendment To Credit Agreement | Credit Facility | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Investments permitted under the Credit Facility |  |  |  | $ 5,000,000
2015 Amendment to Credit Agreement | Credit Facility | Wells Fargo Bank, National Association |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maximum senior secured leverage ratio | 3.25 |  |  |
Debt instrument, maximum total leverage ratio | 4.25 |  |  |
Debt instrument, covenant, coverage ratio | 1.10 |  |  |

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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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