Quarterly Financial Information Disclosure (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

The following tables present unaudited quarterly results for each of the eight quarters in the period ended December 31, 2014. We believe that all necessary adjustments have been included in the amounts stated below to present fairly such quarterly information. Due to the volatility of the industries in which our customers operate, the operating results for any quarter are not necessarily indicative of results for any subsequent period.

	Quarter Ended
	December 31, 2014		September 30, 2014		June 30, 2014		March 31, 2014
	(in thousands)
Sales	$	152,718	$	143,147	$	146,285	$	140,948
Gross Profit	40,879		47,943		52,546		52,661
Restructuring	929		1,183		244		—
Operating income	2,773		9,225		11,512		16,913
Net income	9,319		12,302		10,646		14,715
Earnings per Share:
Basic earnings per share	$	0.23	$	0.31	$	0.26	$	0.36
Diluted earnings per share	$	0.23	$	0.30	$	0.26	$	0.35

	Quarter Ended
	December 31, 2013		September 30, 2013			June 30, 2013			March 31, 2013
	(in thousands)
Sales	$	152,580	$	142,899		$	139,711		$	111,814
Gross Profit	58,827		56,211			53,259			41,839
Restructuring	2,305		19,884			24,206			—
Operating income (loss)	20,018		(1,542		)	(11,572		)	7,719
Net income (loss)	34,355		687			(9,782		)	6,826
Earnings per Share:
Basic earnings (loss) per share	$	0.85	$	0.02		$	(0.25	)	$	0.18
Diluted earnings (loss) per share	$	0.83	$	0.02		$	(0.24	)	$	0.17