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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, 2016 | Sep. 30, 2015 | Dec. 31, 2015
JPMorgan Chase Bank Credit Agreement [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity | $ 250,000 |  |
Line of credit facility, additional borrowing capacity | $ 50,000 |  |
Maturity date | Oct. 31, 2020 |  |
Additional available borrowing capacity | $ 145,100 |  |
Outstanding borrowings under credit facility | $ 70,000 |  | $ 47,400
Weighted average interest rate | 1.80% |  | 1.70%
Fixed charge coverage ratio | 1 |  |
JPMorgan Chase Bank Credit Agreement [Member] | Pay Cash dividend [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Agreement permissions | $ 20,000 |  |
JPMorgan Chase Bank Credit Agreement [Member] | Stock Repurchase [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Agreement permissions | 20,000 |  |
JPMorgan Chase Bank Credit Agreement [Member] | The Credit Agreement Also Permits Acquisitions, Permissible Debt, Cash Dividend Payments And Stock Repurchases [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Agreement permissions | 20,000 |  |
JPMorgan Chase Bank Credit Agreement [Member] | Minimum [Member] | Stock Repurchase [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Borrowing base | $ 25,000 |  |
JPMorgan Chase Bank Credit Agreement [Member] | LIBOR [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Margin on variable rate | 1.25% |  |
JPMorgan Chase Bank Credit Agreement [Member] | LIBOR [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Margin on variable rate | 1.75% |  |
JPMorgan Chase Bank Credit Agreement [Member] | Index Loan [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Weighted average interest rate |  |  | 3.70%
Average daily loan balance outstanding |  |  | $ 4,900
JPMorgan Chase Bank Credit Agreement [Member] | Alternate Base Rate [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Outstanding borrowings under credit facility | $ 2,900 |  | $ 3,400
Weighted average interest rate | 3.80% |  | 3.80%
Average daily loan balance outstanding |  |  | $ 4,900
JPMorgan Chase Bank Credit Agreement [Member] | Alternate Base Rate [Member] | Minimum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Margin on variable rate | 0.25% |  |
JPMorgan Chase Bank Credit Agreement [Member] | Alternate Base Rate [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Margin on variable rate | 0.75% |  |
JPMorgan Chase Bank Credit Agreement [Member] | Fixed Assets Included in Borrowing Base [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Borrowing base | $ 31,250 |  |
Borrowing base percentage | 12.50% |  |
JPMorgan Chase Bank Credit Agreement [Member] | Fixed Assets Not Included in Borrowing Base [Member] | Maximum [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Borrowing base | $ 25,000 |  |
Borrowing base percentage | 10.00% |  |
JPMorgan Chase Bank Credit Agreement [Member] | Direct Borrowings [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Outstanding borrowings under credit facility | $ 70,000 |  | $ 44,000
Weighted average interest rate |  |  | 1.60%
General Electric Capital Corporation Credit Facility [Member] | Index Loan [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Weighted average interest rate |  | 3.80% |
Average daily loan balance outstanding |  | $ 3,500 |
Line of Credit [Member] | CANADA [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Maximum borrowing capacity | $ 10,000 |  |

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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 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 Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=6876686&loc=d3e534808-122878 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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- Definition Average amount borrowed under the credit facility during the period. + 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://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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://www.xbrl.org/2003/role/presentationRef -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=6877327&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://www.xbrl.org/2003/role/presentationRef -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=6877327&loc=d3e13212-122682 + Details
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