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Long-Term Debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Long-Term Debt |
Schedule of long-term debt | Long‑term debt consisted of the following as of December 31, 2018 and 2017 (in thousands):
|  | December 31, |  | December 31, |
|  | 2018 |  | 2017 |
Notes payable to banks, due in semi-annual installments, variable interest based on LIBOR, or with an interest rate of 4.00% through 2019, secured by aircraft |  | $ | 6,429 |  | $ | 34,905 |
Notes payable to a financing company, due in semi-annual installments, variable interest based on LIBOR, or with an interest rate of 3.25% through 2021, secured by aircraft |  |  | 36,324 |  |  | 97,612 |
Notes payable to banks, due in semi-annual installments plus interest at 6.10% to 6.51% through 2021, secured by aircraft |  |  | 41,592 |  |  | 63,090 |
Notes payable to banks, due in monthly installments plus interest of 2.68% to 6.86% through 2025, secured by aircraft |  |  | 371,300 |  |  | 372,157 |
Notes payable to banks, due in monthly installments, plus interest at 4.07% to 6.05% through 2029, secured by aircraft |  |  | 105,069 |  |  | 49,001 |
Notes payable to banks, due in quarterly installments, plus interest at 3.39% to 5.08% through 2030, secured by aircraft |  |  | 2,621,416 |  |  | 2,085,822 |
Notes payable to banks due in monthly installments, interest at 3.30% through 2019, secured by spare engines |  |  | 3,308 |  |  | 9,763 |
Long-term debt |  | $ | 3,185,438 |  | $ | 2,712,350 |
Current portion of long-term debt |  |  | (354,072) |  |  | (313,243) |
Less long-term portion of unamortized debt issue cost, net |  |  | (21,598) |  |  | (21,761) |
Long-term debt, net of current maturities and debt issue costs |  | $ | 2,809,768 |  | $ | 2,377,346 |
Current portion of long-term debt |  |  | 354,072 |  |  | 313,243 |
Less current portion of unamortized debt issue cost, net |  |  | (3,866) |  |  | (3,565) |
Current portion of long-term debt, net of debt issue costs |  | $ | 350,206 |  | $ | 309,678 |
Schedule of maturities of long-term debt | The aggregate amounts of principal maturities of long‑term debt as of December 31, 2018 were as follows (in thousands):
2019 |  | $ | 354,072 |
2020 |  |  | 351,738 |
2021 |  |  | 347,835 |
2022 |  |  | 353,935 |
2023 |  |  | 359,677 |
Thereafter |  |  | 1,418,181 |
|  | $ | 3,185,438 |

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- Definition Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer. + 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e),(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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