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Quarterly Financial Data (Tables)
 12 Months Ended
Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]  
Summary of Quarterly Results
Summarized quarterly results for the years ended December 31, 2015 and 2014 are as follows:

Three months ended 2015
 

 
March 31
 
June 30
 
September 30
 
December 31
 
Full Year
Revenues, net
 
 
 
 
 
 
 
 
 
Operations Management
$
123,853

 
$
125,048

 
$
128,043

 
$
129,397

 
$
506,341

Analytics
19,657

 
30,573

 
35,460

 
36,461

 
122,151

Total Revenues, net
$
143,510

 
$
155,621

 
$
163,503

 
$
165,858

 
$
628,492

Gross profit
 
 
 
 
 
 
 
 
 
Operations Management
$
44,124

 
$
44,239

 
$
46,566

 
$
47,333

 
$
182,262

Analytics
6,261

 
10,904

 
13,739

 
12,409

 
43,313

Total Gross profit
$
50,385

 
$
55,143

 
$
60,305

 
$
59,742

 
$
225,575

 
 
 
 
 
 
 
 
 
 
Net income
$
9,567

 
$
12,074

 
$
15,162

 
$
14,762

 
$
51,565

Earnings Per Share:

 

 

 

 

Basic
$
0.29

 
$
0.36

 
$
0.46

 
$
0.44

 
$
1.55

Diluted
$
0.28

 
$
0.35

 
$
0.44

 
$
0.43

 
$
1.51

Weighted-average number of shares used in computing earnings per share:

 

 

 

 

Basic
33,236,259

 
33,417,079

 
33,307,312

 
33,231,716

 
33,298,104

Diluted
34,051,971

 
34,207,973

 
34,180,635

 
34,272,731

 
34,178,340

Note:

 

 

 

 

Stock compensation expense
$
4,255

 
$
3,553

 
$
4,471

 
$
3,768

 
$
16,047

Amortization of intangibles
$
2,059

 
$
2,808

 
$
2,642

 
$
2,717

 
$
10,226


Three months ended 2014
 

 
March 31
 
June 30
 
September 30
 
December 31
 
Full Year
Revenues, net
 
 
 
 
 
 
 
 


Operations Management
$
108,246

 
$
104,614

 
$
104,511

 
$
116,292

 
$
433,663

Analytics
13,551

 
15,124

 
17,946

 
18,994

 
65,615

Total Revenues, net
$
121,797

 
$
119,738

 
$
122,457

 
$
135,286

 
$
499,278

Gross profit
 
 
 
 
 
 
 
 
 
Operations Management
$
42,293

 
$
34,151

 
$
32,651

 
$
38,075

 
$
147,170

Analytics
4,582

 
4,328

 
4,823

 
5,840

 
19,573

Gross profit
$
46,875

 
$
38,479

 
$
37,474

 
$
43,915

 
$
166,743

 
 
 
 
 
 
 
 
 
 
Net income
$
11,147

 
$
7,762

 
$
6,075

 
$
7,461

 
$
32,445

Earnings Per Share:

 

 

 

 

Basic
$
0.34

 
$
0.24

 
$
0.18

 
$
0.23

 
$
0.99

Diluted
$
0.33

 
$
0.23

 
$
0.18

 
$
0.22

 
$
0.96

Weighted-average number of shares used in computing earnings per share:

 

 

 

 

Basic
32,523,490

 
32,812,155

 
32,890,475

 
32,986,276

 
32,804,606

Diluted
33,428,544

 
33,673,669

 
33,676,665

 
33,761,462

 
33,636,593

Note:

 

 

 

 

Stock compensation expense
$
4,176

 
$
1,966

 
$
2,376

 
$
2,493

 
$
11,011

Amortization of intangibles
$
1,536

 
$
1,489

 
$
1,441

 
$
2,157

 
$
6,623