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SELECTED QUARTERLY INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2013
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 (loss) for each of the quarters in the years ended December 31, 2013 and 2012.

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,
 
2013
 
2013
 
2013
 
2013
 
2012
 
2012
 
2012
 
2012
Net revenues
$
90,412

 
$
91,715

 
$
87,922

 
$
77,040

 
$
79,170

 
$
78,045

 
$
76,382

 
$
71,773

Gross profit
$
48,391

 
$
48,774

 
$
46,207

 
$
39,864

 
$
39,403

 
$
38,751

 
$
37,755

 
$
34,592

Net income (loss)
$
16,037

 
$
16,654

 
$
13,672

 
$
10,903

 
$
9,716

 
$
(44,406
)
 
$
(7,176
)
 
$
7,461

Earnings per share


 


 


 


 


 


 


 


Basic
$
0.54

 
$
0.56

 
$
0.47

 
$
0.38

 
$
0.34

 
$
(1.54
)
 
$
(0.25
)
 
$
0.26

Diluted
$
0.52

 
$
0.54

 
$
0.45

 
$
0.37

 
$
0.33

 
$
(1.54
)
 
$
(0.25
)
 
$
0.25

Shares used in per share calculation


 


 


 


 


 


 


 


Basic
29,974

 
29,762

 
29,178

 
28,754

 
28,785

 
28,908

 
28,619

 
28,227

Diluted
30,924

 
30,652

 
30,158

 
29,783

 
29,436

 
28,908

 
28,619

 
29,435