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Note 5 - Senior Credit Facility (Tables) | 6 Months Ended
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Jun. 30, 2018
Notes Tables |
Schedule of Maturities of Long-term Debt [Table Text Block] |
Principal Payments |  |
2018 |  | $ | 3,450 |
2019 |  |  | 6,900 |
2020 |  |  | 6,900 |
2021 |  |  | 2,300 |
Total |  | $ | 19,550 |

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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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