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SELECTED QUARTERLY INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2016
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, 2016 and 2015.

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.
 
Three Months Ended
 
(unaudited)
 
Dec. 31,
 
Sept. 30,
 
June 30,
 
Mar. 31,
 
Dec. 31,
 
Sept. 30,
 
June 30,
 
Mar. 31,
(in thousands, except per share data)
2016
 
2016
 
2016
 
2016
 
2015
 
2015
 
2015
 
2015
Net revenues
$
101,108

 
$
103,790

 
$
97,169

 
$
85,326

 
$
87,289

 
$
88,878

 
$
85,265

 
$
82,557

Gross profit
$
49,384

 
$
51,193

 
$
47,637

 
$
42,947

 
$
42,916

 
$
44,161

 
$
44,018

 
$
42,292

Net income
$
13,617

 
$
14,165

 
$
11,265

 
$
8,843

 
$
12,701

 
$
11,513

 
$
8,590

 
$
6,343

Earnings per share


 


 


 


 


 


 


 


Basic
$
0.47

 
$
0.49

 
$
0.39

 
$
0.31

 
$
0.45

 
$
0.40

 
$
0.29

 
$
0.22

Diluted
$
0.46

 
$
0.48

 
$
0.38

 
$
0.30

 
$
0.44

 
$
0.39

 
$
0.29

 
$
0.21

Shares used in per share calculation


 


 


 


 


 


 


 


Basic
29,196

 
28,972

 
28,850

 
28,679

 
28,483

 
28,855

 
29,368

 
29,309

Diluted
29,914

 
29,625

 
29,422

 
29,244

 
29,126

 
29,298

 
30,034

 
30,058