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SELECTED QUARTERLY INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information [Table Text Block]
The following tables set forth certain data from the Company's consolidated statements of income for each of the quarters in the years ended December 31, 2011 and 2010.

The unaudited quarterly consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements contained herein and include all adjustments that the Company considers necessary for a fair presentation of such information when read in conjunction with the Company's annual audited consolidated financial statements and notes thereto appearing elsewhere in this report. The operating results for any quarter are not necessarily indicative of the results for any subsequent period or for the entire fiscal year (in thousands, except per share data).

 
Three Months Ended
 
(unaudited)
 
Dec. 31,
 
Sept. 30,
 
June 30,
 
Mar. 31,
 
Dec. 31,
 
Sept. 30,
 
June 30,
 
Mar. 31,
 
2011
 
2011
 
2011
 
2011
 
2010
 
2010
 
2010
 
2010
Net revenues
$
66,730

 
$
75,063

 
$
80,184

 
$
76,762

 
$
72,986

 
$
75,452

 
$
79,858

 
$
71,507

Gross profit
$
31,554

 
$
35,043

 
$
37,626

 
$
36,423

 
$
36,125

 
$
39,005

 
$
41,489

 
$
35,922

Net income
$
6,326

 
$
7,512

 
$
10,599

 
$
9,854

 
$
8,929

 
$
12,634

 
$
15,587

 
$
12,314

Earnings per share


 


 


 


 


 


 


 


Basic
$
0.23

 
$
0.26

 
$
0.37

 
$
0.34

 
$
0.32

 
$
0.45

 
$
0.56

 
$
0.45

Diluted
$
0.22

 
$
0.25

 
$
0.35

 
$
0.33

 
$
0.30

 
$
0.43

 
$
0.53

 
$
0.42

Shares used in per share calculation


 


 


 


 


 


 


 


Basic
28,077

 
28,799

 
28,938

 
28,628

 
28,134

 
27,894

 
27,844

 
27,470

Diluted
29,171

 
29,879

 
30,346

 
30,187

 
29,844

 
29,283

 
29,535

 
29,358