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Note 12 - Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Derivative Liabilities at Fair Value [Table Text Block]
Counterparty
Effective (Start) Date:
Termination Date:
Notional Amount
On effective date
Interest Rate Payable
ABN Amro Bank
April 13, 2018
Ju1y 13, 2021
$16,575
1.4425%
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Warrants Outstanding
December 31, 2015
Warrant Shares Outstanding
December 31, 2015
Term (in years)
Warrant Exercise Price
Fair Value – Liability
December 31, 2015
5,330,000
4,743,700
5
$2.80
3,216
Warrants Outstanding
June 30, 2016
Warrant Shares Outstanding
June 30, 2016
Term (in years)
Warrant Exercise Price
Fair Value – Liability
June 30, 2016
5,273,820
4,693,700
5
$2.80
1,840
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
        Fair Value Measurement at Reporting Date
    Total   Using Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
  Significant
Other
Observable
Inputs
(Level 2)
  Significant
Other
Unobservable
Inputs
(Level 3)
Warrants                                
As of December 31, 2015     3,216       -       -       3,216  
As of June 30, 2016     1,840       -       -       1,840  
Interest Rate Swaps                                
As of December 31, 2015     -       -       -       -  
As of June 30, 2016     156       -       156       -  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Closing balance – December 31, 2015     3,216  
Change in fair value of warrants, included in Statement of Comprehensive (loss)/income     (1,376 )
Change in fair value of interest rate swaps, included in Statement of Comprehensive (loss)/income     156  
Closing balance – June 30, 2016     1,996  
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, 2015
Fair Value at
June 30, 2016
Balance Sheet
Location
Valuation
Technique
Significant
Unobservable Input
Value
December 31, 2015
Value
June 30, 2016
Warrants
3,216
1,840
Non-Current liabilities –Derivative financial instruments
Cox, Ross and Rubinstein Binomial
Volatility
88.47%
92.67%
Derivative Instruments, Gain (Loss) [Table Text Block]
    Amount of (loss)/ gain recognized in Unaudited Interim Condensed Statement of Comprehensive (loss)/income located in Gain on financial instruments
    Period ended June 30,
    2015   2016
Interest rate swaps- change in fair value     -       (156 )
Warrants- change in fair value     367       1,376  
Interest rate swaps– reversal of realized loss     225       -  
Total     592       1,220