Equity (Details) $ / shares in Units, $ in Thousands |
6 Months Ended | ||||
|---|---|---|---|---|---|
|
May 11, 2018
$ / shares
|
Mar. 09, 2018 |
Feb. 27, 2018
$ / shares
|
Jun. 30, 2018
USD ($)
Vote
$ / shares
shares
|
Dec. 31, 2017
USD ($)
|
|
| Equity [Abstract] | |||||
| Share capital | $ | $ 10,022 | $ 10,022 | |||
| Shares outstanding (in shares) | shares | 100,217,260 | ||||
| Nominal value per share (in dollars per share) | $ / shares | $ 0.10 | ||||
| Voting right per share | Vote | 1 | ||||
| Treasury shares held (in shares) | shares | 0 | ||||
| Increase (decrease) in treasury shares (in shares) | shares | 0 | ||||
| Fourth Quarter [Member] | |||||
| Equity [Abstract] | |||||
| Dividend declared and paid (in dollars per share) | $ / shares | $ 0.31 | ||||
| First Quarter [Member] | |||||
| Equity [Abstract] | |||||
| Dividend declared and paid (in dollars per share) | $ / shares | $ 0.32 | ||||
| Abengoa [Member] | |||||
| Equity [Abstract] | |||||
| Ownership interest | 16.50% | 16.47% | |||
| Algonquin [Member] | |||||
| Equity [Abstract] | |||||
| Ownership interest | 25.00% |