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Long-Term Debt and Financing Arrangements | 12 Months Ended
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Dec. 31, 2018
Debt Disclosure [Abstract] |
Long-Term Debt and Financing Arrangements | NOTE 11. Long-Term Debt and Financing Arrangements On July 1, 2017, we entered into a $350 million unsecured credit agreement (the "Credit Agreement"). The Credit Agreement replaces the Amended and Restated Credit Agreement dated December 12, 2013 (“2013 Credit Agreement”). The Company used the Credit Agreement to finance, in part, the Estenson Acquisition. Borrowings under the Credit Agreement generally bear interest at a variable rate equal to (i) LIBOR plus a specified margin based upon the Borrowers' total net leverage ratio (as defined in the Credit Agreement) (the "Total Net Leverage Ratio"), or (ii) the base rate (which is the highest of (a) the administrative agent's prime rate, (b) the federal funds rate plus 0.50% or (c) the sum of 1% plus one-month LIBOR) plus a specified margin based upon the Total Net Leverage Ratio. The specified margin for Eurodollar loans varies from 100.0 to 200.0 basis points per annum. The specified margin for base rate loans varies from 0.0 to 100.0 basis points per annum. The Borrowers must also pay (1) a commitment fee ranging from 10.0 to 25.0 basis points per annum (based upon the Total Net Leverage Ratio) on the aggregate unused commitments and (2) a letter of credit fee ranging from 100.0 to 200.0 basis points per annum (based upon the Total Net Leverage Ratio) on the undrawn amount of letters of credit. We have standby letters of credit that expire in 2019. As of December 31, 2018, our letters of credit were $27.0 million. As of December 31, 2018, we had no borrowings under our bank revolving line of credit and our unused and available borrowings were $323.0 million. Our unused and available borrowings were $284.9 million as of December 31, 2017. We were in compliance with our debt covenants as of December 31, 2018. We have entered into various Equipment Notes (“Notes”) for the purchase of tractors, trailers and containers. The Notes are secured by the underlying equipment financed in the agreements. Our outstanding debt is as follows (in thousands):
| December 31, |  |  | December 31, |
| 2018 |  |  | 2017 |
| (in thousands except principal and interest payments) |
Revolving line of credit | $ | - |  |  | $ | 45,000 |
Secured Equipment Notes due on various dates in 2024 with monthly principal and interest payments between $403 and $83,000 commencing on various dates in 2017; interest is paid monthly at a fixed annual rate between 2.85% and 3.41% |  | 11,658 |  |  |  | 13,586 |
Secured Equipment Notes due on various dates in 2023 with monthly principal and interest payments between $669 and $341,341 commencing on various dates in 2016, 2017 and 2018; interest is paid monthly at a fixed annual rate between 2.23% and 4.08% |  | 192,858 |  |  |  | 36,981 |
Secured Equipment Notes due on various dates in 2022 with monthly principal and interest payments between $3,030 and $254,190 commencing on various dates from 2015 to 2017; interest is paid monthly at a fixed annual rate of between 2.16% and 2.87% |  | 24,092 |  |  |  | 30,301 |
Secured Equipment Notes due on various dates in 2021 with monthly principal and interest payments between $1,940 and $352,655 commencing on various dates from 2014 to 2017; interest is paid monthly at a fixed annual rate between 2.04% and 2.96% |  | 55,855 |  |  |  | 76,885 |
Secured Equipment Notes due on various dates in 2020 with monthly principal and interest payments between $3,614 and $398,496 commencing on various dates from 2013 to 2016; interest is paid monthly at a fixed annual rate between 1.72% and 2.78% |  | 32,904 |  |  |  | 50,737 |
Secured Equipment Notes due on various dates in 2019 with monthly principal and interest payments between $3,243 and $322,780 commencing on various dates from 2013 to 2015; interest is paid monthly at a fixed annual rate between 1.87% and 2.62% |  | 13,417 |  |  |  | 36,178 |
Secured Equipment Notes due on various dates in 2018 with monthly principal and interest payments between $6,480 and $163,428 commencing on various dates in 2013 and 2014; interest is paid monthly at a fixed annual rate between 2.05% and 2.7% |  | - |  |  |  | 2,406 |
|  | 330,784 |  |  |  | 292,074 |
Less current portion |  | (101,713 | ) |  |  | (77,266 | )
Total long-term debt | $ | 229,071 |  |  | $ | 214,808 |
Aggregate principal payments, in thousands, due subsequent to December 31, 2018, are as follows:
2019 | $ | 101,713 |
2020 |  | 83,589 |
2021 |  | 65,521 |
2022 |  | 49,327 |
2023 |  | 29,507 |
2024 and thereafter |  | 1,127 |
| $ | 330,784 |
In 2011, we entered into a lease agreement for 3,126 chassis for a period of 10 years. We are accounting for this lease as a capital lease. Interest on this capital lease obligation is based on interest rates that approximate currently available interest rates; therefore, indebtedness under this capital lease obligation approximates fair value. We paid interest of $0.4 million, $0.5 million and $0.6 million in 2018, 2017 and 2016, respectively, related to this capital lease.

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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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