Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (Unaudited) (Tables)

v2.4.1.9
Quarterly Results of Operations (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2014
Quarterly Results of Operations (Unaudited) [Abstract]  
Schedule of Quarterly Financial Information [Table Text Block]
The following is a summary of the quarterly results of operations for the years ended December 31, 2014 and 2013: 
 
 
2014
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
171,569

 
$
193,852

 
$
201,477

 
$
214,061

Income from operations
 
16,271

 
27,595

 
26,906

 
25,634

Net income
 
10,202

 
17,178

 
16,744

 
17,045

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.33

 
$
0.56

 
$
0.55

 
$
0.56

   Diluted
 
$
0.33

 
$
0.55

 
$
0.54

 
$
0.55

 
 
 
 
 
 
 
 
 
 
 
2013
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
141,560

 
$
159,804

 
$
170,033

 
$
181,084

Income from operations
 
15,790

 
22,505

 
22,857

 
23,203

Net income
 
10,855

 
13,831

 
14,197

 
15,584

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.37

 
$
0.46

 
$
0.47

 
$
0.51

   Diluted
 
$
0.36

 
$
0.45

 
$
0.46

 
$
0.50