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Debt (Tables) | 3 Months Ended
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Mar. 31, 2019
Debt Disclosure [Abstract] |
Schedule of total debt | The table below reflects the Company's total debt, including borrowings under its credit agreement and master loan agreement for equipment notes:
|  |  |  |  |  |  |  |  |  | Outstanding |  |  | Outstanding |
|  |  |  |  |  |  |  |  |  | Balance as of |  |  | Balance as of |
|  |  |  | Stated Interest |  | Payment |  | Term |  | March 31, |  |  | December 31, |
(dollar amounts in thousands) |  | Inception Date |  | Rate (per annum) |  | Frequency |  | (years) |  | 2019 |  |  | 2018 |
Credit Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving loans |  | 6/30/2016 |  | Variable |  | Variable |  | 5 |  | $ | 79,915 |  |  | $ | 58,306 |
Equipment Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equipment Note 1 |  | 9/28/2018 |  | 4.16% |  | Semi-annual |  | 5 |  |  | 11,734 |  |  |  | 12,655 |
Equipment Note 2 |  | 9/28/2018 |  | 4.23% |  | Semi-annual |  | 7 |  |  | 11,745 |  |  |  | 12,279 |
Equipment Note 3 |  | 12/31/2018 |  | 3.97% |  | Semi-annual |  | 5 |  |  | 2,291 |  |  |  | 2,291 |
Equipment Note 4 |  | 12/31/2018 |  | 4.02% |  | Semi-annual |  | 7 |  |  | 2,313 |  |  |  | 2,313 |
Equipment Note 5 |  | 12/31/2018 |  | 4.01% |  | Semi-annual |  | 7 |  |  | 1,948 |  |  |  | 1,948 |
|  |  |  |  |  |  |  |  |  |  | 30,031 |  |  |  | 31,486 |
Total debt |  |  |  |  |  |  |  |  |  |  | 109,946 |  |  |  | 89,792 |
Less: Current portion of long-term debt |  |  |  |  |  |  |  |  |  |  | (3,742 | ) |  |  | (3,681 | )
Long-term debt |  |  |  |  |  |  |  |  |  | $ | 106,204 |  |  | $ | 86,111 |
Schedule of remaining principal payments for long term obligations | The following table sets forth our remaining principal payments for the Company’s outstanding Equipment Notes as of March 31, 2019:
|  | Future |
|  | Equipment Notes |
(In thousands) |  | Principal Payments |
Remainder of 2019 |  | $ | 2,225 |
2020 |  |  | 3,835 |
2021 |  |  | 3,995 |
2022 |  |  | 4,164 |
2023 |  |  | 7,328 |
2024 |  |  | 1,820 |
Thereafter |  |  | 6,664 |
Total future principal payments |  | $ | 30,031 |
Less: Current portion of equipment notes |  |  | (3,742 | )
Long-term principal obligations |  | $ | 26,289 |

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