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Selected Quarterly Financial Data (Unaudited) (Tables)
12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following table comprises selected financial data for the years ended December 31, 2017 and 2016:


2017 QUARTERS
 
2016 QUARTERS
(In thousands, except per share data)

1st
 
2nd
 
3rd
 
4th
 
1st
 
2nd
 
3rd
 
4th
Total revenue

$
290,063

 
$
259,318

 
$
269,625

 
$
295,782

 
$
310,682

 
$
307,895

 
$
283,782

 
$
288,160

Gross Profit
 
25,362

 
25,735

 
24,406

 
26,445

 
26,971

 
27,251

 
26,095

 
26,595

Operating income

11,649

 
9,204

 
10,090

 
10,277

 
11,811

 
11,298

 
11,162

 
8,555

Net income

6,668

 
5,461

 
5,800

 
41,568

 
6,589

 
6,050

 
6,607

 
4,409

Basic earnings per share

$
0.61

 
$
0.50

 
$
0.52

 
$
3.77

 
$
0.62

 
$
0.57

 
$
0.62

 
$
0.40

Diluted earnings per share

$
0.60

 
$
0.49

 
$
0.51

 
$
3.70

 
$
0.61

 
$
0.55

 
$
0.60

 
$
0.40

Weighted average number of shares outstanding

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic

10,909

 
10,987

 
11,075

 
11,026

 
10,628

 
10,702

 
10,733

 
10,794

Diluted

11,075

 
11,191

 
11,272

 
11,234

 
10,856

 
10,958

 
11,061

 
10,988