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Note 4 - Credit Facilities - Summary of Credit and Other Debt Facilities (Details) $ in Thousands | Dec. 31, 2018 USD ($)
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Repayments of principal, 2019 | $ 10,414
Repayments of principal, 2020 | 487
Repayments of principal, 2021 | 300
Repayments of principal, 2022 | 300
Repayments of principal, 2023 | 700
Branco Bradesco [Member] |
Repayments of principal, 2019 | 910
Repayments of principal, 2020 |
Repayments of principal, 2021 |
Repayments of principal, 2022 |
Repayments of principal, 2023 |
Branco Santander [Member] |
Interest Rate | 1.38%
Repayments of principal, 2019 | $ 98
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 | $ 8,747
Repayments of principal, 2020 |
Repayments of principal, 2021 |
Repayments of principal, 2022 |
Repayments of principal, 2023 |
Fifth Third Bank [Member] |
Interest Rate | 4.97%
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 | 6.60%
Repayments of principal, 2019 | $ 326
Repayments of principal, 2020 |
Repayments of principal, 2021 |
Repayments of principal, 2022 |
Repayments of principal, 2023 |
Bancomer Bank and Shareholder Loan [Member] |
Interest Rate | 12.23%
Repayments of principal, 2019 |
Repayments of principal, 2020 | 153
Repayments of principal, 2021 |
Repayments of principal, 2022 |
Repayments of principal, 2023 |
Minimum [Member] | Branco Bradesco [Member] |
Interest Rate | 0.37%
Maximum [Member] | Branco Bradesco [Member] |
Interest Rate | 0.92%

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