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Quarterly Financial Data (Unaudited)
 12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data (Unaudited)
Quarterly Financial Data (Unaudited)
The following table provides quarterly information for the years ended December 31, 2016 and 2015 (in thousands, except per share amounts):
 
THREE MONTHS ENDED
 
March 31
 
June 30
 
September 30
 
December 31
2016
 
 
 
 
 
 
 
Net service revenues
$
322,201

 
$
335,047

 
$
336,460

 
$
325,998

Gross profit
97,189

 
106,282

 
105,380

 
99,648

Net income
3,650

 
10,864

 
9,020

 
9,239

Earnings per share-basic
$
0.14

 
$
0.41

 
$
0.35

 
$
0.36

Earnings per share-diluted
$
0.14

 
$
0.41

 
$
0.34

 
$
0.36

2015
 
 
 
 
 
 
 
Net service revenues
$
312,611

 
$
337,353

 
$
341,575

 
$
327,699

Gross profit
94,740

 
106,038

 
109,821

 
103,515

Net income
5,785

 
11,593

 
13,545

 
11,901

Earnings per share-basic
$
0.20

 
$
0.41

 
$
0.49

 
$
0.43

Earnings per share-diluted
$
0.20

 
$
0.41

 
$
0.48

 
$
0.43