Nine Months Ended

September 30,

Year Ended December 31,

(in thousands)

2017

2016

2015

2014

2013

2012

Fixed Charges:

Interest expense

$

11,614

$

1,273

$

1,307

$

1,715

$

1,663

$

2,309

Capitalized expenses related to indebtedness

7,102

166

265

193

183

203

Portion of rental expense which represents interest factor

5

6

6

7

97

208

Total Fixed Charges

$

18,720

$

1,445

$

1,577

$

1,914

$

1,944

$

2,721

Earnings Available for Fixed Charges:

Profit (Loss) before income taxes

$

(2,632

)

$

66,491

$

50,424

$

69,538

$

59,878

$

59,890

Add: Fixed charges

18,720

1,445

1,577

1,914

1,944

2,721

Add: Net loss attributable to noncontrolling interest

28

Total Earnings Available for Fixed Charges

$

16,116

$

67,936

$

52,002

$

71,453

$

61,822

$

62,611

Ratio of Earnings to Fixed Charges

47.01

32.97

37.32

31.81

23.01

Deficiency of Earnings Available to Cover Fixed Charges

$

2,604