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Note 19 - Borrowings - Maturity of Borrowings (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Statement Line Items [Line Items] |  |  |
Total borrowings |  | $ 965,859 | $ 840,236
Interest to be accrued (*) | [1] | 18,290 | 11,289
Total |  | 984,149 | 851,525
Not later than one year [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 931,214 | 808,694
Interest to be accrued (*) | [1] | 14,512 | 6,461
Total |  | 945,726 | 815,155
Later than one year and not later than two years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,935 | 1,233
Interest to be accrued (*) | [1] | 1,212 | 1,172
Total |  | 6,147 | 2,405
Later than two years and not later than three years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,484 | 3,739
Interest to be accrued (*) | [1] | 1,203 | 1,161
Total |  | 5,687 | 4,900
Later than three years and not later than four years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,978 | 3,360
Interest to be accrued (*) | [1] | 1,190 | 1,142
Total |  | 6,168 | 4,502
Later than four years and not later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 20,248 | 3,632
Interest to be accrued (*) | [1] | 174 | 1,116
Total |  | 20,422 | 4,748
Later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  | 19,578
Interest to be accrued (*) | [1] |  | 237
Total |  |  | 19,815
Finance lease liabilities [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 197 | 165
Finance lease liabilities [member] | Not later than one year [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 138 | 130
Finance lease liabilities [member] | Later than one year and not later than two years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 59 | 35
Finance lease liabilities [member] | Later than two years and not later than three years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  |
Finance lease liabilities [member] | Later than three years and not later than four years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  |
Finance lease liabilities [member] | Later than four years and not later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  |
Finance lease liabilities [member] | Later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  |
Other borrowings [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 965,662 | 840,071
Other borrowings [member] | Not later than one year [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 931,076 | 808,564
Other borrowings [member] | Later than one year and not later than two years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,876 | 1,198
Other borrowings [member] | Later than two years and not later than three years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,484 | 3,739
Other borrowings [member] | Later than three years and not later than four years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 4,978 | 3,360
Other borrowings [member] | Later than four years and not later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  | 20,248 | 3,632
Other borrowings [member] | Later than five years [member] |  |  |
Statement Line Items [Line Items] |  |  |
Total borrowings |  |  | $ 19,578
[1] | Includes the effect of hedge accounting.

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