Quarterly Financial Data - Schedule of Quarterly Financial Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]
Net sales	$ 149,035	$ 177,350	$ 202,223	$ 150,679	$ 177,137	$ 182,374	$ 209,275	$ 190,245	$ 679,287	$ 759,031	$ 805,256
Gross profit	30,566	48,909	38,659	25,422	40,370	33,187	65,735	44,444	143,556	183,736	223,018
Income (loss) from continuing operations	37,473	10,250	7,486	(68)	11,622	6,710	26,130	14,324	55,141	58,786	83,984
Net loss (income) from discontinued operations	130	(10)	59		62	2	97	21	179	182	142
Net income (loss)	37,343	10,260	7,427	(68)	11,560	6,708	26,033	14,303	54,962	58,604	83,842
Net income (loss) applicable to common stock	$ 37,343	$ 10,260	$ 7,427	$ (368)	$ 11,560	$ 6,708	$ 26,033	$ 14,003	$ 54,662	$ 58,304	$ 83,537
Basic:
Income (loss) from continuing operations	$ 1.67	$ 0.46	$ 0.33	$ (0.02)	$ 0.52	$ 0.30	$ 1.17	$ 0.63	$ 2.44	$ 2.62	$ 3.81
Net loss from discontinued operations	$ (0.01)								$ (0.01)	$ (0.01)	$ (0.01)
Net income (loss)	$ 1.66	$ 0.46	$ 0.33	$ (0.02)	$ 0.52	$ 0.30	$ 1.17	$ 0.63	$ 2.43	$ 2.61	$ 3.80
Diluted:
Income (loss) from continuing operations	$ 1.59	$ 0.43	$ 0.31	$ (0.02)	$ 0.49	$ 0.28	$ 1.11	$ 0.61	$ 2.34	$ 2.50	$ 3.59
Net loss from discontinued operations	$ (0.01)								$ (0.01)	$ (0.01)	$ (0.01)
Net income (loss)	$ 1.58	$ 0.43	$ 0.31	$ (0.02)	$ 0.49	$ 0.28	$ 1.11	$ 0.61	$ 2.33	$ 2.49	$ 3.58