| Three Months Ended                            March 31, | |||||||
| 2018 | 2017 | ||||||
| Net income | $ | 3,299 | $ | 6,615 | |||
| Additions: | |||||||
|    Fixed charges | |||||||
|        Interest expense | 12,827 | 11,405 | |||||
|        Capitalized interest | 372 | 216 | |||||
| 13,199 | 11,621 | ||||||
| Deductions: | |||||||
|        Capitalized interest | (372 | ) | (216 | ) | |||
|        Net loss attributable to noncontrolling interests | — | 19 | |||||
| Adjusted earnings | 16,126 | 18,039 | |||||
| Fixed charges (from above) | $ | 13,199 | $ | 11,621 | |||
| Ratio of earnings to fixed charges | 1.22 | 1.55 | |||||