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Note 4 - Credit Facilities - Summary of Credit and Other Debt Facilities (Details) $ in Thousands | Mar. 31, 2019 USD ($)
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Repayments of Principal, 2019 | $ 10,049
Repayments of Principal, 2020 | 592
Repayments of Principal, 2021 | 300
Repayments of Principal, 2022 | 300
Repayments of Principal, 2023 | 700
Branco Bradesco [Member] |
Repayments of Principal, 2019 | 753
Repayments of Principal, 2020 |
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |
Branco Bradesco [Member] | Minimum [Member] |
Interest Rate | 0.37%
Branco Bradesco [Member] | Maximum [Member] |
Interest Rate | 0.92%
Branco Santander [Member] |
Interest Rate | 1.38%
Repayments of Principal, 2019 | $ 82
Repayments of Principal, 2020 |
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |
PNC Bank, National Association [Member] |
Interest Rate | 5.02%
Repayments of Principal, 2019 | $ 8,450
Repayments of Principal, 2020 |
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |
Fifth Third Bank [Member] |
Interest Rate | 5.23%
Repayments of Principal, 2019 |
Repayments of Principal, 2020 |
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |
Resource Plus Acquisition Note [Member] |
Interest Rate | 1.85%
Repayments of Principal, 2019 | $ 333
Repayments of Principal, 2020 | 334
Repayments of Principal, 2021 | 300
Repayments of Principal, 2022 | 300
Repayments of Principal, 2023 | $ 700
National Australia Bank [Member] |
Interest Rate | 6.56%
Repayments of Principal, 2019 | $ 431
Repayments of Principal, 2020 |
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |
Bancomer Bank and Shareholder Loan [Member] |
Interest Rate | 12.50%
Repayments of Principal, 2019 |
Repayments of Principal, 2020 | 258
Repayments of Principal, 2021 |
Repayments of Principal, 2022 |
Repayments of Principal, 2023 |

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