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Debt and Credit Agreements - Narrative (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 31, 2020 | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Debt Issuance Costs, Noncurrent, Net |  | $ 1,900 |  | $ 1,900 |  |  |  |
Net Debt to Consolidated Adjusted EBITDA Ratio Covenant |  | 5.25 |  | 5.25 |  |  |  | 4.50
Other Nonoperating Expense |  | $ 1,432 | $ 7,435 | $ 1,920 | $ 7,435 |  |  |
Debt Instrument, Covenant, Increase In Leverage Ratio |  |  |  | 0.0025 |  |  |  |
LIBOR | Minimum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable rate basis spread | 1.50% |  |  |  |  |  |  |
LIBOR | Maximum |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Variable rate basis spread | 2.25% |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Net Debt to Consolidated Adjusted EBITDA Ratio Covenant |  |  |  |  |  | 4.75 | 5.75 |
Term Loan 2020 [Member] |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |
Long-term Debt |  | $ 280,000 |  | $ 280,000 |  |  |  |

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- Definition Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. 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=114775744&loc=d3e28555-108399 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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