Equity (Details) $ / shares in Units, $ in Thousands |
1 Months Ended | 3 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
|
Feb. 26, 2019
$ / shares
|
Mar. 31, 2018 |
Mar. 31, 2019
USD ($)
Vote
$ / shares
shares
|
Dec. 31, 2018
USD ($)
|
|
| Equity [Abstract] | ||||
| Share capital | $ | $ 10,022 | $ 10,022 | ||
| Shares outstanding (in 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) | 0 | |||
| Increase (decrease) in treasury shares (in shares) | 0 | |||
| Fourth Quarter [Member] | ||||
| Equity [Abstract] | ||||
| Dividend declared and paid (in dollars per share) | $ / shares | $ 0.37 | |||
| Algonquin [Member] | ||||
| Equity [Abstract] | ||||
| Ownership interest | 25.00% | 41.47% | 41.47% |