Six Months Ended June 30, | Year Ended December 31, | ||||||||||||||||||||||
2018 | 2017 | 2016 | 2015 | 2014 | 2013 | ||||||||||||||||||
Ratio of Earnings to Fixed Charges | |||||||||||||||||||||||
Income (loss) before income taxes | $ | 21,520 | $ | 1,180 | $ | (12,286 | ) | $ | (11,695 | ) | $ | 10,006 | $ | 2,404 | |||||||||
Add: Fixed charges | 5,647 | 5,829 | 7,486 | 8,435 | 9,337 | 17,534 | |||||||||||||||||
Income (loss) before income taxes and fixed charges | $ | 27,167 | $ | 7,009 | $ | (4,800 | ) | $ | (3,260 | ) | $ | 19,343 | $ | 19,938 | |||||||||
Fixed Charges: | |||||||||||||||||||||||
Total interest expense | $ | 4,020 | $ | 2,710 | $ | 4,262 | $ | 5,169 | $ | 6,990 | $ | 15,438 | |||||||||||
Interest factor in rents (1) | 1,627 | 3,119 | 3,224 | 3,266 | 2,347 | 2,096 | |||||||||||||||||
Total fixed charges | $ | 5,647 | $ | 5,829 | $ | 7,486 | $ | 8,435 | $ | 9,337 | $ | 17,534 | |||||||||||
Ratio of earnings to fixed charges | 4.8 | 1.2 | * | * | 2.1 | 1.1 | |||||||||||||||||
* Deficiency of earnings available to cover fixed charges | $ | — | $ | — | $ | (12,286) | $ | (11,695) | $ | — | $ | — | |||||||||||
Ratio of Earnings to Combined Fixed Charges and Preferred Stock Dividends | |||||||||||||||||||||||
Income (loss) before income taxes | $ | 21,520 | $ | 1,180 | $ | (12,286 | ) | $ | (11,695 | ) | $ | 10,006 | $ | 2,404 | |||||||||
Add: Fixed charges | 5,647 | 5,829 | 7,486 | 8,435 | 9,337 | 17,534 | |||||||||||||||||
Income (loss) before income taxes and combined fixed charges and preferred stock dividends | $ | 27,167 | $ | 7,009 | $ | (4,800 | ) | $ | (3,260 | ) | $ | 19,343 | $ | 19,938 | |||||||||
Fixed Charges: | |||||||||||||||||||||||
Total interest expense | $ | 4,020 | $ | 2,710 | $ | 4,262 | $ | 5,169 | $ | 6,990 | $ | 15,438 | |||||||||||
Interest factor in rents (1) | 1,627 | 3,119 | 3,224 | 3,266 | 2,347 | 2,096 | |||||||||||||||||
Preferred stock dividends (2) | 22,995 | 54,137 | 50,730 | 46,847 | 28,740 | 11,518 | |||||||||||||||||
Total combined fixed charges and preferred stock dividends | $ | 28,642 | $ | 59,966 | $ | 58,216 | $ | 55,282 | $ | 38,077 | $ | 29,052 | |||||||||||
Ratio of earnings to combined fixed charges and preferred stock dividends | * | * | * | * | * | * | |||||||||||||||||
* Deficiency of earnings available to cover combined fixed charges and preferred stock dividends | $ | (1,475 | ) | $ | (52,957 | ) | $ | (63,016 | ) | $ | (58,542 | ) | $ | (18,734 | ) | $ | (9,114 | ) |