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Quarterly Financial Information (Tables)
 12 Months Ended
Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following table contains selected financial information from unaudited statements of operations for each quarter of 2012 and 2011.
 
 
Quarters Ended
 
 
2012
 
2011
 
 
Dec. 31
 
Sept. 30
 
June 30
 
Mar. 31
 
Dec. 31
 
Sept. 30
 
June 30
 
Mar. 31
Net revenues
 
$
9,100

 
$
8,186

 
$
8,215

 
$
9,401

 
$
13,025

 
$
11,496

 
$
11,308

 
$
13,077

Contribution margin
 
1,334

 
805

 
864

 
1,108

 
1,590

 
722

 
779

 
1,427

Contribution margin %
 
14.7

 
9.8

 
10.5

 
11.8

 
12.2

 
6.3

 
6.9

 
10.9

Income (loss) before income taxes
 
(626
)
 
(1,071
)
 
(812
)
 
(551
)
 
150

 
(5,554
)
 
(965
)
 
(224
)
Net income (loss)
 
(629
)
 
(1,075
)
 
(829
)
 
(558
)
 
153

 
(6,523
)
 
(645
)
 
(222
)
Earnings (loss) per diluted share
 
(0.11
)
 
(0.19
)
 
(0.14
)
 
(0.10
)
 
0.03

 
(1.15
)
 
(0.12
)
 
(0.04
)
Shares used in computing diluted earnings (loss) per share
 
5,711

 
5,711

 
5,710

 
5,696

 
5,716

 
5,670

 
5,654

 
5,654