Annual report pursuant to Section 13 and 15(d)

Quarterly Data - Schedule of Quarterly Data (Detail)

v2.4.0.6
Quarterly Data - Schedule of Quarterly Data (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Net sales $ 131,682 $ 148,169 $ 147,241 $ 128,373 $ 122,259 $ 137,577 $ 135,396 $ 111,294 $ 555,465 $ 506,526
Income from operations 3,611 13,581 14,941 8,835 4,816 14,855 15,695 3,087 40,968 38,453
Net (loss) income $ (6,810) $ 1,107 $ 1,056 $ (2,587) $ (5,483) $ 1,454 $ (868) $ (4,882) $ (7,234) $ (9,779)