Exhibit 12.1

	YTD 3/31/18			YTD 3/31/17			Fiscal Year Ended December 31,
($ in thousands)							2017			2016			2015			2014		2013		2012			2011			2010
Net Income (loss)	$	5,701		$	12,282		$	(9,551	)	$	49,868		$	41,469		$	62,856	$	61,690	$	34,757		$	(38,338	)	$	84,871
Income Tax Expense (benefit)		(1,253	)		(3,002	)		(499	)		(2,250	)		(8,723	)		8,338		1,019		(5,856	)		2,806			8,866
Fixed Charges	$	5,158		$	2,764		$	18,061		$	10,126		$	6,068		$	1,680	$	6,940	$	6,088		$	7,812		$	8,723
Earnings	$	9,606		$	12,044		$	8,011		$	57,744		$	38,814		$	72,874	$	69,649	$	34,989		$	(27,721	)	$	102,460
Interest Costs	$	4,861		$	2,467		$	16,906		$	8,905		$	4,913		$	822	$	6,169	$	5,393		$	6,476		$	7,020
Operating Lease Expense		900			900			3,500			3,700			3,500			2,600		2,335		2,105			4,048			5,160
Portion of rental expense representative of the interest factor (a)		297			297			1,155			1,221			1,155			858		771		695			1,336			1,703
Total Fixed Charges	$	5,158		$	2,764		$	18,061		$	10,126		$	6,068		$	1,680	$	6,940	$	6,088		$	7,812		$	8,723
Ratio of Earnings to Fixed Charges		1.9			4.4			0.4			5.7			6.4			43.4		10.0		5.7			(b	)		11.7

(a) One-third of net rent expense is the portion of rental expense deemed representative of the interest factor.

(b) The ratio of earnings to fixed charges and preferred share dividends was less than 1.0x in fiscal 2011. The deficiency in the ratio of earnings to fixed charges and preferred share dividend was $35.5 million.