Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (Unaudited)

v3.19.3.a.u2
Quarterly Results of Operations (Unaudited)
 12 Months Ended
Dec. 31, 2019
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, 2019 and 2018: 
 
 
2019
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
321,471

 
$
345,756

 
$
361,663

 
$
381,504

Income from operations
 
24,734

 
30,550

 
30,689

 
32,852

Net income
 
18,407

 
22,330

 
22,195

 
24,168

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.64

 
$
0.78

 
$
0.78

 
$
0.86

   Diluted
 
$
0.64

 
$
0.78

 
$
0.78

 
$
0.85

 
 
 
 
 
 
 
 
 
 
 
2018
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
302,608

 
$
330,343

 
$
331,375

 
$
356,561

Income from operations
 
24,235

 
32,870

 
29,879

 
35,047

Net income
 
17,741

 
24,298

 
22,329

 
27,684

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.60

 
$
0.83

 
$
0.76

 
$
0.95

   Diluted
 
$
0.60

 
$
0.82

 
$
0.76

 
$
0.95