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Note 26 - Share-based Expenses (Details Textual) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 26, 2017 | Jun. 23, 2017 USD ($) | Feb. 20, 2012 | Aug. 31, 2018 | Jul. 31, 2017 | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2018 GBP (£) | Dec. 20, 2018 | Jun. 22, 2017
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Option life, share options granted |  |  |  |  |  | 3 | 3 |  |  |  |  |
Share-based compensation arrangement, percentage of outstanding stock maximum |  |  |  |  |  | 10.00% |  |  |  |  |  |
Weighted average remaining contractual life of outstanding share options |  |  |  |  |  | 3.14 | 3.72 |  |  | 3.14 |  |
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets |  | $ 806,000 |  |  |  | $ 14,000 | $ 835,000 | [1] | $ 170,000 |  |  |
Share consolidation ratio | 5 |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Borrowings, interest rate |  | 7.25% |  |  |  |  |  |  |  |  | 6.00% |
Dividend loans, Percentage of dividend as payment of interest |  | 80.00% | 80.00% |  |  |  |  |  |  |  |  |
Liabilities from share-based payment transactions |  |  |  |  |  | 2,090,000 | 1,826,000 |  |  |  |  |
Expense from cash-settled share-based payment transactions |  |  |  |  |  | 43,000 | 311,000 |  |  |  |  |
Expense from cash-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets |  |  |  |  |  | 315,000 | 976,000 | [1] | 618,000 |  |  |
Faciliation and advanced dividend loans [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets |  | $ 806,000 |  |  |  |  |  |  |  |  |  |
Borrowings, interest rate |  | 7.25% |  |  |  |  |  |  |  |  |  |
Dividend loans, Percentage of dividend as payment of interest |  | 80.00% |  |  |  |  |  |  |  |  |  |
LIBOR [member] | Faciliation and advanced dividend loans [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Borrowings, adjustment to interest rate basis |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Mr. J Staiger [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expense from equity-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets |  |  |  |  |  | $ 14,000 | 29,000 |  | $ 170,000 |  |  |
Omnibus Equity Incetive Compensation Plan [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Option life, share options granted |  |  |  |  |  | 10 |  |  |  |  |  |
Rolling Stock Option Plan [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Option life, share options granted |  |  |  |  |  | 5 |  |  |  |  |  |
Restricted stock units (RSUs) [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting period of other equity instruments |  |  |  |  |  | 3 |  |  |  |  |  |
Weighted average fair value at measurement date, other equity instruments granted |  |  |  |  |  | $ 5.46 | $ 7.37 |  |  |  |  |
Performance share units (PSUs) [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting period of other equity instruments |  |  |  |  |  | 3 |  |  |  |  |  |
Performance probability |  |  |  |  |  | 85.00% | 94.00% |  | 100.00% |  |  |
Liabilities from share-based payment transactions |  |  |  |  |  | $ 2,043,000 | $ 1,782,000 |  |  |  |  |
Expense from cash-settled share-based payment transactions |  |  |  |  |  | 43,000 | 311,000 |  | $ 0 |  |  |
Weighted average fair value at measurement date, other equity instruments granted |  |  |  |  |  | 5.46 | 7.17 |  |  |  |  |
Cash-settled awards [member] |  |  |  |  |  |  |  |  |  |  |  |
Statement Line Items [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting period of other equity instruments |  |  |  |  | 3 |  |  |  |  |  |  |
Liabilities from share-based payment transactions |  |  |  |  |  | 47,000 | 44,000 |  |  |  |  |
Number of other equity instruments granted in share-based payment arrangement |  |  |  | 5,918 | 37,330 |  |  |  |  |  |  |
Weighted average fair value at measurement date, other equity instruments granted | £ |  |  |  |  |  |  |  |  |  | £ 4,390 |  |
Expense from cash-settled share-based payment transactions in which goods or services received did not qualify for recognition as assets |  |  |  |  |  | $ 97,000 | $ 123,000 |  |  |  |  |
[1] | Restated, refer note 4(a).

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