Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Data [Abstract]

Schedule Of Quarterly Financial Information

			2013 Quarter
(in thousands, except per share data)			1st		2nd		3rd		4th
Sales		$	542,444	$	607,522	$	599,658	$	756,843
Gross profit			36,834		44,367		45,440		59,843
Net income			11,487		8,457		23,726		67,489
Earnings per common share:
	Basic		0.21		0.16		0.44		1.26
	Diluted		0.21		0.16		0.43		1.24
			2012 Quarter
(in thousands, except per share data)			1st		2nd		3rd		4th
Sales		$	593,417	$	630,031	$	610,769	$	633,933
Gross profit			40,508		45,991		44,780		45,459
Net income			5,598		13,580		19,314		18,115
Earnings per common share:
	Basic		0.10		0.24		0.35		0.33
	Diluted		0.10		0.24		0.34		0.33
			2011 Quarter
(in thousands, except per share data)			1st		2nd		3rd		4th
Sales		$	538,312	$	585,549	$	570,083	$	559,086
Gross profit			37,624		37,751		34,635		28,825
Net income			14,513		14,701		19,867		2,878
Earnings per common share:
	Basic		0.24		0.24		0.34		0.05
	Diluted		0.24		0.24		0.34		0.05