Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (Unaudited)

v3.6.0.2
Quarterly Results of Operations (Unaudited)
 12 Months Ended
Dec. 31, 2016
Quarterly Results of Operations (Unaudited) [Abstract]  
Quarterly Financial Information [Text Block]
Quarterly Results of Operations (Unaudited)

The following is a summary of the quarterly results of operations for the years ended December 31, 2016 and 2015: 
 
 
2016
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
229,548

 
238,637

 
249,552

 
264,793

Income from operations
 
21,404

 
(14,348
)
 
24,700

 
28,223

Net income
 
13,099

 
(10,066
)
 
11,931

 
12,706

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.43

 
$
(0.33
)
 
$
0.39

 
$
0.42

   Diluted
 
$
0.43

 
$
(0.33
)
 
$
0.39

 
$
0.42

 
 
 
 
 
 
 
 
 
 
 
2015
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
205,918

 
$
249,694

 
$
247,093

 
$
256,420

Income from operations
 
8,248

 
19,908

 
24,601

 
29,015

Net income
 
4,836

 
11,824

 
15,687

 
23,228

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.16

 
$
0.38

 
$
0.51

 
$
0.75

   Diluted
 
$
0.16

 
$
0.38

 
$
0.50

 
$
0.75