Quarterly Information - Unaudited (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Information [Abstract]

Quarterly information

(in thousands, except per share amounts)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
2012
Net sales		$  73,605		$  69,956		$  72,190		$  77,154
Gross profit (a)		17,369		15,654		16,124		17,852
Net income		2,000		1,508		1,528		3,319
Net income per common share:
Basic		0.19		0.15		0.15		0.32
Diluted		0.19		0.15		0.15		0.32
Comprehensive income (loss) (b)		5,445		1,278		4,362		(5,815	)
2011
Net sales		$  89,068		$  94,971		$  74,263		$  86,514
Gross profit (a)		25,674		27,381		16,204		19,527
Net income		7,676		9,123		2,756		1,754
Net income per common share:
Basic		0.74		0.88		0.27		0.17
Diluted		0.74		0.88		0.26		0.17
Comprehensive income (loss) (b)		9,477		9,817		1,194		(18,995	)

(a) Gross profit excludes depreciation.

(b) Fourth quarter includes a net-of-tax adjustment to reflect the funded status of the various pension and other postretirement benefit plans of $(10,520) and $(23,028) for 2012 and 2011, respectively.