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Note 7 - Debt, Credit Agreement and Leases (Details Textual) - USD ($) $ in Millions |  | 6 Months Ended |
--- | --- | --- | ---
Jul. 21, 2022 | Jun. 30, 2023 | Dec. 31, 2022
Line of Credit Facility [Line Items] |  |  |
Line of Credit Facility, Commitment Fee Percentage |  | 7.76% |
New Credit Agreement [Member] | Revolving Credit Facility [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 150.0 |  |
Letters of credit outstanding, amount |  | $ 6.8 |
Line of Credit Facility, Maximum Borrowing Capacity, Option | $ 75.0 |  |
Letters of Credit Outstanding, Amount |  | $ 6.8 |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Fed Funds Effective Rate Overnight Index Swap Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 50.00% |  |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of Credit Facility, Commitment Fee Percentage | 0.45% |  |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.00% |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 1.00% |
Debt Instrument, Basis Spread on Variable Rate, Applicable Margin | 1.00% |  |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Leverage Ratio Applicable Margin [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, participation fee, percent | 2.00% |  |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of Credit Facility, Commitment Fee Percentage | 0.7875% |  |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 3.50% |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.50% |
New Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Leverage Ratio Applicable Margin [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt instrument, participation fee, percent | 3.50% |  |
New Credit Agreement [Member] | Letter of Credit [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Letters of credit, drawn amount |  | $ 31.0 |
Senior Notes [Member] | The 2028 Senior Notes [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.25% | 7.25%
Senior Notes [Member] | New Credit Agreement [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Letters of credit, drawn amount |  | $ 150.0 |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + 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 -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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