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Note 11 - Long-term Debt - Summary of Long-term Debt (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Long-term Debt | $ 400,229,914 | $ 424,660,265
Repayments | (80,230,351) |
Proceeds from Issuance of Debt | 55,800,000 |
Current portion of long-term debt | 55,238,573 | 75,546,625
Long-term debt | 344,991,341 | 349,113,640
Total debt | 400,229,914 | 424,660,265
Current portion of deferred finance charges | 644,858 | 618,174
Debt Issuance Costs, Noncurrent, Net | 540,414 | 1,879,537
Total deferred finance charges | 2,344,325 | 2,497,711
Total debt, net of deferred finance charges | 397,885,589 | 422,162,554
Less: Current portion of long-term debt, net of current portion of deferred finance charges | 54,593,715 | 74,928,451
Long term debt, net of deferred finance charges | $ 343,291,874 | 347,234,103
Term Loan 1 [Member] |  |
Maturity Date | Sep. 09, 2016 |
Original Amount | $ 100,067,500 |
Long-term Debt |  | 8,787,030
Repayments | $ (8,787,030) |
Term Loan 2 [Member] |  |
Maturity Date | Jun. 28, 2016 |
Original Amount | $ 6,580,000 |
Long-term Debt |  | 1,289,680
Repayments | $ (1,289,680) |
Term Loan 3 [Member] |  |
Maturity Date | Dec. 21, 2017 |
Original Amount | $ 49,875,000 |
Long-term Debt | 14,414,250 | 17,496,750
Repayments | $ (3,082,500) |
Term Loan 4 [Member] |  |
Maturity Date | Feb. 19, 2020 |
Original Amount | $ 40,250,000 |
Long-term Debt | 16,875,000 | 19,375,000
Repayments | $ (2,500,000) |
Term Loan 5 [Member] |  |
Maturity Date | Nov. 04, 2020 |
Original Amount | $ 33,240,000 |
Long-term Debt | 17,728,000 | 19,667,000
Repayments | $ (1,939,000) |
Term Loan 6 [Member] |  |
Maturity Date | Oct. 09, 2020 |
Original Amount | $ 29,437,000 |
Long-term Debt | 7,090,000 | 7,870,000
Repayments | $ (780,000) |
Term Loan 7 [Member] |  |
Maturity Date | Jul. 15, 2016 |
Original Amount | $ 45,000,000 |
Long-term Debt |  | 27,150,000
Repayments | $ (27,150,000) |
Term Loan 8 [Member] |  |
Maturity Date | Sep. 15, 2021 |
Original Amount | $ 24,600,000 |
Long-term Debt | 21,141,273 |
Repayments | (3,458,727) |
Proceeds from Issuance of Debt | $ 24,600,000 |
Term Loan 9 [Member] |  |
Maturity Date | Apr. 14, 2020 |
Original Amount | $ 20,400,000 |
Long-term Debt | 14,900,000 | 17,100,000
Repayments | $ (2,200,000) |
Term Loan 10 [Member] |  |
Maturity Date | Sep. 01, 2018 |
Original Amount | $ 49,400,000 |
Long-term Debt | 31,250,000 | 34,550,000
Repayments | $ (3,300,000) |
Term Loan 11 [Member] |  |
Maturity Date | Jun. 20, 2020 |
Original Amount | $ 43,250,000 |
Long-term Debt | 29,375,000 | 32,375,000
Repayments | $ (3,000,000) |
Term Loan 12 [Member] |  |
Maturity Date | Sep. 30, 2020 |
Original Amount | $ 45,212,500 |
Long-term Debt | 28,791,594 | 33,844,180
Repayments | $ (5,052,586) |
Term Loan 13 [Member] |  |
Maturity Date | Jul. 31, 2022 |
Original Amount | $ 50,225,000 |
Long-term Debt | 42,840,000 | 46,445,000
Repayments | $ (3,605,000) |
Term Loan 14 [Member] |  |
Maturity Date | Apr. 16, 2020 |
Original Amount | $ 30,000,000 |
Long-term Debt | 22,335,000 | 25,665,000
Repayments | $ (3,330,000) |
Term Loan 15 [Member] |  |
Maturity Date | Oct. 02, 2020 |
Original Amount | $ 13,000,000 |
Long-term Debt | 11,240,000 | 12,120,000
Repayments | $ (880,000) |
Term Loan 16 [Member] |  |
Maturity Date | Jan. 08, 2023 |
Original Amount | $ 20,925,000 |
Long-term Debt | 18,440,000 | 19,860,000
Repayments | $ (1,420,000) |
Term Loan 17 [Member] |  |
Maturity Date | Jun. 30, 2023 |
Original Amount | $ 67,200,000 |
Long-term Debt | 59,475,000 | 31,500,000
Repayments | (3,225,000) |
Proceeds from Issuance of Debt | $ 31,200,000 |
Term Loan 18 [Member] |  |
Maturity Date | Dec. 14, 2022 |
Original Amount | $ 22,400,000 |
Long-term Debt | 20,906,672 | 22,400,000
Repayments | $ (1,493,328) |
Term Loan 19 [Member] |  |
Maturity Date | Sep. 03, 2021 |
Original Amount | $ 22,750,000 |
Long-term Debt | 20,718,750 | 22,343,750
Repayments | $ (1,625,000) |
Term Loan 20 [Member] |  |
Maturity Date | Jul. 07, 2023 |
Original Amount | $ 25,350,000 |
Long-term Debt | 22,709,375 | $ 24,821,875
Repayments | $ (2,112,500) |

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