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Note 11 - Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2019
Notes Tables |
Schedule of Derivative Liabilities at Fair Value [Table Text Block] |
Agreement Date |  | Counterparty |  | Effective (start) date: |  | Termination Date: |  | Notional amount on effective date |  | Interest rate payable
June 3, 2016 |  | ABN Amro Bank |  | April 13, 2018 |  | Ju1y 13, 2021 |  | $ | 16,575 |  |  |  | 1.4425 | %
December 19, 2016 |  | ABN Amro Bank |  | December 21, 2016 |  | January 13, 2022 |  | $ | 20,700 |  |  |  | 2.0800 | %
March 29, 2017 |  | NORD/LB Bank |  | May 17, 2017 |  | May 17, 2023 |  | $ | 21,139 |  |  |  | 2.1900 | %
March 29, 2018 |  | Alpha Bank |  | March 29, 2018 |  | February 25, 2025 |  | $ | 21,900 |  |  |  | 2.9700 | %
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] |
Warrants Outstanding December 31, 2018 |  | Warrant Shares Outstanding December 31, 2018 |  | Term (in years) |  | Warrant Exercise Price* |  | Fair Value – Liability December 31, 2018
| 1,976,389 |  |  |  | 424,923 |  |  |  | 5 |  |  | $ | 11.60 |  |  |  | 1,915 |
Warrants Outstanding June 30, 2019 |  | Warrant Shares Outstanding June 30, 2019 |  | Term (in years) |  | Warrant Exercise Price |  | Fair Value – Liability June 30, 2019
| 333,500 |  |  |  | 125,896 |  |  |  | 5 |  |  | $ | 6.60 |  |  |  | 281 |
Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
|  |  |  |  | Fair Value Measurement at Reporting Date |
As of December 31, 2018 |  | Total |  |  | Using Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Other Unobservable Inputs (Level 3) |
Non-current asset |  |  | 1,153 |  |  |  | - |  |  |  | 1,153 |  |  |  | - |
Current liability |  |  | 1,915 |  |  |  | - |  |  |  | - |  |  |  | 1,915 |
Non-current liability |  |  | 359 |  |  |  | - |  |  |  | 359 |  |  |  |  |
As of June 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-current asset |  |  | 165 |  |  |  | - |  |  |  | 165 |  |  |  | - |
Current liability |  |  | 281 |  |  |  | - |  |  |  | - |  |  |  | 281 |
Non-current liability |  |  | 1,257 |  |  |  | - |  |  |  | 1,257 |  |  |  | - |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
Closing balance – December 31, 2018 |  |  | 1,915 |
Change in fair value of warrants, included in the condensed consolidated statements of comprehensive loss |  |  | 1,634 |
Closing balance – June 30, 2019 |  |  | 281 |
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] |
Quantitative information about Level 3 Fair Value Measurements
Derivative type |  | Fair Value at December 31, 2018 |  | Fair Value at June 30, 2019 |  | Balance Sheet Location |  | Valuation Technique |  | Significant Unobservable Input |  | Value December 31, 2018 |  | Value June 30, 2019
Warrants |  |  | 1,915 |  |  |  | 281 |  |  | Current liabilities –Derivative financial instruments |  | Cox, Ross and Rubinstein Binomial |  | Volatility |  |  | 110 | % |  |  | 60 | %
Derivative Instruments, Gain (Loss) [Table Text Block] |
|  | Amount of gain recognized in Statement of comprehensive loss located in gain/(loss) on Derivate Financial Instruments |
|  | Six Months Ended June 30, 2018 |  |  | Six Months Ended June 30, 2019 |
Interest rate swaps- change in fair value |  |  | 1,324 |  |  |  | - |
Interest rate swaps– realized loss |  |  | (81 | ) |  |  | (147 | )
Warrants- change in fair value |  |  | (1,113 | ) |  |  | 1,634 |
Total |  |  | 130 |  |  |  | 1,487 |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Unrealized (Loss) on cash flow hedges
Balance, December 31, 2018 |  |  | - |
Effective portion of changes in fair value of interest swap contracts |  |  | (1,388 | )
Balance, June 30, 2019 |  |  | (1,388 | )

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of the location and amount of derivative instruments and nonderivative instruments designated as hedging instruments reported before netting adjustments, and the amount of gain (loss) on derivative instruments and nonderivative instruments designated and qualified as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4E -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624181-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of the location and fair value amounts of derivative instruments (and nonderivative instruments that are designated and qualify as hedging instruments) reported in the statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 + Details
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- Definition Tabular disclosure of derivative liabilities at fair value. + References No definition available. + Details
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- Definition Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: 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(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775 + Details
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