Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 679,287	$ 759,031	$ 805,256
Cost of sales	535,731	575,295	582,238
Gross profit	143,556	183,736	223,018
Selling, general and administrative expense	100,674	89,988	86,343
Provisions for (recovery of) losses on accounts receivable	478	(214)	347
Property insurance recoveries in excess of losses incurred	(66,255)
Other expense (income), net	3,351	(1,693)	(115)
Operating income	105,308	95,655	136,443
Interest expense, net	13,986	4,237	6,658
Losses on extinguishment of debt	1,296		136
Non-operating other income, net	(100)	(281)
Income from continuing operations before provisions for income taxes and equity in earnings of affiliate	90,126	91,699	129,649
Provisions for income taxes	35,421	33,594	46,208
Equity in earnings of affiliate	(436)	(681)	(543)
Income from continuing operations	55,141	58,786	83,984
Net loss from discontinued operations	179	182	142
Net income (loss)	54,962	58,604	83,842
Dividends on preferred stocks	300	300	305
Net income (loss) applicable to common stock	$ 54,662	$ 58,304	$ 83,537
Basic:
Income from continuing operations	$ 2.44	$ 2.62	$ 3.81
Net loss from discontinued operations	$ (0.01)	$ (0.01)	$ (0.01)
Net income (loss)	$ 2.43	$ 2.61	$ 3.80
Diluted:
Income from continuing operations	$ 2.34	$ 2.50	$ 3.59
Net loss from discontinued operations	$ (0.01)	$ (0.01)	$ (0.01)
Net income (loss)	$ 2.33	$ 2.49	$ 3.58