The maximum adjusted EBITDA under the covenant of the debt instrument.

No definition available.

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- Definition

The minimum adjusted EBITDA to interest expense ratio allowed under the covenant of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

The percentage of excess cash flow that must be used to repay debt if the net leverage ratio is less than 3.00 under the covenant of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

The maximum senior secured net indebtedness to adjusted EBITDA ratio allowed under the covenant of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

The repurchase price of the notes expressed as a percentage of principal amount if there are changes in control.

+ References

No definition available.

+ Details

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- Definition

The notes repurchase price expressed as a percentage of principal amount if asset sales proceeds are not used for specified purposes.

+ References

No definition available.

+ Details

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- Definition

The floor rate of the variable rate of the debt instrument.

+ References

No definition available.

+ Details

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- Definition

Weighted average interest rate of debt outstanding, net of currency swap contract.

+ References

No definition available.

+ Details

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Period Type:	instant

- 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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Data Type:	num:percentItemType
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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121603541&loc=SL77918627-209977

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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
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-Paragraph 1
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-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the fee for available but unused credit capacity under the credit facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

+ Details

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- Details

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- Details

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Note 9 - Debt (Details Textual) $ in Millions	12 Months Ended
Note 9 - Debt (Details Textual) $ in Millions	Dec. 31, 2020 USD ($)	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2019 USD ($)	Apr. 18, 2017 USD ($)
Finance Lease, Liability, Current	$ 0.1			$ 0.2
Long-term Debt, Total	$ 311.6
Debt, Weighted Average Interest Rate, Net of Currency Swap Contract	4.50%
Secured Debt [Member]
Long-term Debt, Current Maturities, Total	$ 0.8
Debt Including Related Cross-currency Swap Instrument [Member]
Debt, Weighted Average Interest Rate	5.50%
The 2017 Credit Agreement [Member]
Debt Instrument, Covenant, Adjusted EBITDA, Maximum			4.00	4.50
Debt Instrument, Covenant, Adjusted EBITDA to Interest Expense Ratio, Minimum			3.50
Debt Instrument, Covenant, Senior Secured Net Indebtedness to Adjusted EBITDA Ratio, Maximum			3.50	4.00
Long-term Debt, Current Maturities, Total	$ 10.0
Long-term Debt, Total	10.0
Debt Instrument, Unused Borrowing Capacity, Amount	186.7
Line of Credit Facility, Commitment Fee Amount	0.6
The 2017 Credit Agreement [Member] \| Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate			0.50%
The 2017 Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			1.00%
Debt Instrument, Variable Rate Floor			0.00%
The 2017 Credit Agreement [Member] \| LIBOR on Eurocurrency Liabilities [Member]
Debt Instrument, Variable Rate Floor			0.00%
The 2017 Credit Agreement [Member] \| Minimum [Member]
Debt Instrument, Covenant, Repayment of Debt if Net Leverage Ratio is Less than 3.00, Percentage of Excess Cash Flow		25.00%
The 2017 Credit Agreement [Member] \| Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate			0.25%
The 2017 Credit Agreement [Member] \| Minimum [Member] \| LIBOR on Eurocurrency Liabilities [Member] \| Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate			1.25%
The 2017 Credit Agreement [Member] \| Maximum [Member]
Debt Instrument, Covenant, Repayment of Debt if Net Leverage Ratio is Less than 3.00, Percentage of Excess Cash Flow		50.00%
The 2017 Credit Agreement [Member] \| Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate			1.25%
The 2017 Credit Agreement [Member] \| Maximum [Member] \| LIBOR on Eurocurrency Liabilities [Member] \| Term Loan [Member]
Debt Instrument, Basis Spread on Variable Rate			2.25%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Line of Credit Facility, Commitment Fee Percentage			0.175%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			0.075%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member] \| LIBOR on Eurocurrency Liabilities [Member]
Debt Instrument, Basis Spread on Variable Rate			1.075%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Line of Credit Facility, Commitment Fee Percentage			0.35%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate			0.90%
The 2017 Credit Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member] \| LIBOR on Eurocurrency Liabilities [Member]
Debt Instrument, Basis Spread on Variable Rate			1.90%
The 2017 Credit Agreement [Member] \| Letter of Credit [Member]
Long-term Line of Credit, Total	3.3
Senior Unsecured Notes [Member]
Debt Instrument, Face Amount					$ 300.0
Debt Instrument, Interest Rate, Stated Percentage					5.625%
Debt Instrument, Notes Repurchase Price As Percentage Of Principal Amount In Changes Of Control					101.00%
Debt Instrument, Notes Repurchase Price As Percentage Of Principal Amount When Not Use Asset Sales Proceeds For Specific Purposes					100.00%
Long-term Debt, Total	$ 300.0