Stockholders' Equity and Partners' Capital - Summary of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 6 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
May 30, 2019 |
Feb. 28, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
|
| Equity [Abstract] | ||||||||
| Preferred stock, dividend per share (in USD per share) | $ 0.375 | $ 0.375 | ||||||
| Preferred stock, total amount | $ 2,588 | $ 2,588 | $ 2,588 | $ 2,588 | $ 2,588 | $ 2,588 | ||
| Common stock, dividend per share (in USD per share) | $ 0.625 | $ 0.625 | $ 0.6250 | $ 0.9000 | $ 1.2500 | $ 1.8000 | ||
| Common stock, total amount | $ 56,318 | $ 54,254 | $ 56,318 | $ 54,254 | $ 77,143 | $ 78,581 | ||