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Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
Quarterly financial data for the years ended December 31, 2012 and 2011 is summarized as follows:
 
 
Quarter Ended
 
 
March 31
 
June 30
 
September 30
 
December 31
 
 
(Unaudited - In thousands, except per share data)
2012
 
 
 
 
 
 
 
 
Net sales
 
$
6,068

 
$
6,549

 
$
6,713

 
$
5,830

Gross profit
 
3,129

 
3,455

 
3,071

 
2,977

Net earnings (loss)
 
(73
)
 
320

 
(328
)
 
(280
)
Earnings (loss) per share:
 
 
 
 
 
 
 
 
Basic
 
$
(0.00
)
 
$
0.01

 
$
(0.01
)
 
$
(0.01
)
Diluted
 
$
(0.00
)
 
$
0.01

 
$
(0.01
)
 
$
(0.01
)
 
 
 
 
 
 
 
 
 
2011
 
 

 
 

 
 

 
 

Net sales
 
$
6,538

 
$
7,494

 
$
7,061

 
$
7,355

Gross profit
 
3,316

 
3,985

 
3,318

 
3,697

Net earnings (loss)
 
143

 
17

 
(289
)
 
58

Earnings (loss) per share:
 
 
 
 
 
 
 
 
Basic
 
$
0.01

 
$
0.00

 
$
(0.01
)
 
$
0.00

Diluted
 
$
0.01

 
$
0.00

 
$
(0.01
)
 
$
0.00