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Summary of Unaudited Quarterly Results of Operations (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Summary of unaudited quarterly results
Unaudited quarterly results of operations for the years ended December 31, 2012 and 2011 are summarized as follows:
 
(Dollars in thousands, except per share data)
 
2012 Quarter Ended
 
Dec. 31
 
Sept. 30
 
June 30
 
Mar. 31
Net sales
$
68,193

 
$
71,984

 
$
74,348

 
$
75,962

Gross profit
39,672

 
43,360

 
36,816

 
41,334

Income (loss) from continuing operations (1)
$
1,524

 
$
(1,316
)
 
$
(61,140
)
 
$
(1,785
)
Income (loss) from discontinued operations
199

 
(2
)
 
(17
)
 
(13
)
Net income (loss)
$
1,723

 
$
(1,318
)
 
$
(61,157
)
 
$
(1,798
)
Basic income (loss) per share of common stock:
 
 
 
 
 
 
 
Continuing operations
$
0.18

 
$
(0.15
)
 
$
(7.12
)
 
$
(0.21
)
Discontinued operations (2)
0.02

 
—

 
—

 
—

Net income (loss) (2)
$
0.20

 
$
(0.15
)
 
$
(7.12
)
 
$
(0.21
)
Diluted income (loss) per share of common stock:
 
 
 
 
 
 
 
Continuing operations
$
0.18

 
$
(0.15
)
 
$
(7.12
)
 
$
(0.21
)
Discontinued operations (2)
0.02

 
—

 
—

 
—

Net income (loss) (2)
$
0.20

 
$
(0.15
)
 
$
(7.12
)
 
$
(0.21
)
 
 
 
 
 
 
 
 
 
2011 Quarter Ended
 
Dec. 31
 
Sept. 30
 
June 30
 
Mar. 31
Net sales
$
72,860

 
$
75,366

 
$
84,154

 
$
82,579

Gross profit
38,993

 
42,546

 
48,299

 
49,939

Income (loss) from continuing operations (3)
$
(5,373
)
 
$
(2,154
)
 
$
1,088

 
$
2,050

Loss from discontinued operations
(174
)
 
(9
)
 
(22
)
 
(30
)
Net income (loss)
$
(5,547
)
 
$
(2,163
)
 
$
1,066

 
$
2,020

Basic income (loss) per share of common stock:
 
 
 
 
 
 
 
Continuing operations (2)
$
(0.63
)
 
$
(0.25
)
 
$
0.13

 
$
0.24

Discontinued operations (2)
(0.02
)
 
—

 
(0.01
)
 
—

Net income (loss) (2)
$
(0.65
)
 
$
(0.25
)
 
$
0.12

 
$
0.24

Diluted income (loss) per share of common stock:
 
 
 
 
 
 
 
Continuing operations (2)
$
(0.63
)
 
$
(0.25
)
 
$
0.13

 
$
0.24

Discontinued operations (2)
(0.02
)
 
—

 
(0.01
)
 
(0.01
)
Net income (loss) (2)
$
(0.65
)
 
$
(0.25
)
 
$
0.12

 
$
0.23


(1)
Income from operations for the three month ended December 31, 2012 includes a $1.6 million gain from sale of assets. Loss from continuing operations for the three months ended June 30, 2012 includes a $28.3 million charge for goodwill impairment, a $2.1 million gain on sale of assets, $6.8 million of severance expenses and a $33.5 million increase in deferred tax asset valuation allowance.

(2)
The sum of the quarterly earnings per share amounts may not equal the total annual earnings per share due to rounding and the uneven timing of earnings throughout the year compared to the weighted average shares outstanding.

(3)
Loss from continuing operations for the three months ended December 31, 2011 includes an $0.8 million net expense for the estimated cost of settling an employment tax matter and a net $0.8 million asset impairment charge.