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Credit Facilities and Long-Term Debt, Revolving Credit Facility (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Line of Credit Facility [Abstract] |  |  |
Outstanding borrowings under credit facility | $ 128,938 |  | $ 10,000
Revolving Credit Facility [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Coverage ratio | 1 |  |
Revolving Credit Facility [Member] | Pay Cash Dividend [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Agreement permissions | $ 20,000 |  |
Revolving Credit Facility [Member] | Stock Repurchase [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Agreement permissions | 20,000 |  |
Revolving Credit Facility [Member] | Stock Repurchase [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Borrowing base | 25,000 |  |
Revolving Credit Facility [Member] | Cash Dividend And Stock Repurchases [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Agreement permissions | 20,000 |  |
Revolving Credit Facility [Member] | Fixed Assets Included in Borrowing Base [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Borrowing base | $ 31,250 |  |
Borrowing base percentage | 12.50% |  |
Revolving Credit Facility [Member] | Fixed Assets Not Included in Borrowing Base [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Borrowing base | $ 25,000 |  |
Borrowing base percentage | 10.00% |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Maximum borrowing capacity | $ 250,000 |  |
Line of credit facility, accordian feature | $ 50,000 |  |
Maturity date | Dec. 31, 2023 |  |
Additional available borrowing capacity | $ 118,400 |  |
Outstanding borrowings under credit facility | 128,900 |  | 10,000
Outstanding letters of credit | $ 2,600 |  | $ 2,800
Weighted average interest rate | 1.40% |  | 1.40%
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Canada [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Maximum borrowing capacity | $ 10,000 |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Margin on variable rate | 1.25% |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | LIBOR [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Margin on variable rate | 1.75% |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Direct Borrowings [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Outstanding borrowings under credit facility | $ 125,000 |  |
Weighted average interest rate | 1.30% |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Outstanding borrowings under credit facility | $ 3,900 |  |
Weighted average interest rate | 3.50% |  |
Average daily loan balance outstanding | $ 1,000 | $ 1,300 | $ 1,500
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Margin on variable rate | 0.25% |  |
JPMorgan Chase Bank, N.A. [Member] | Revolving Credit Facility [Member] | Alternate Base Rate [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Abstract] |  |  |
Margin on variable rate | 0.75% |  |

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- Definition The credit agreement permits us to pay cash dividends and make stock repurchases in any twelve month period subject to a minimum availability. Provided specific conditions are met, the credit agreement also permits acquisitions, permissible debt financing, capital expenditures, and cash dividend payments and stock repurchases. + References No definition available. + Details
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- Definition The amount of money a lender will loan to a company based on the value of the collateral the company pledges. The borrowing base is usually determined by a method called margining, where the lender determines a discount factor that is multiplied by the value of the collateral; the result is the amount that will be loaned to the company. + References No definition available. + Details
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- Definition The percentage of the amount of money a lender will loan to a company based on the value of the collateral the company pledges. The borrowing base is usually determined by a method called margining, where the lender determines a discount factor that is multiplied by the value of the collateral; the result is the amount that will be loaned to the company. + References No definition available. + Details
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- Definition Refers to a financial covenant requiring us, on a consolidated basis, to maintain a fixed charge coverage ratio + References No definition available. + Details
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- Definition Additional borrowing capacity under the accordion feature credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
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- Definition Average daily outstanding amount borrowed under the credit facility during the period. + 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 Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- References No definition available. + Details
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- Definition The effective interest rate at the end of the reporting period. + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + 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 http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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X
- Definition The carrying value as of the balance sheet date of the current portion 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 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(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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