Annual report pursuant to Section 13 and 15(d)

Quarterly Results of Operations (Unaudited)

v2.4.0.6
Quarterly Results of Operations (Unaudited)
 12 Months Ended
Dec. 31, 2011
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, 2011 and 2010: 
 
 
2011
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
120,201

 
$
132,192

 
$
135,749

 
$
148,259

Income from operations
 
13,286

 
19,876

 
20,320

 
23,629

Net income
 
7,869

 
11,969

 
12,912

 
14,449

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.27

 
$
0.41

 
$
0.44

 
$
0.51

   Diluted
 
$
0.27

 
$
0.40

 
$
0.44

 
$
0.50

 
 
 
 
 
 
 
 
 
 
 
2010
 
 
March 31
 
June 30
 
September 30
 
December 31
Operating revenue
 
$
106,977

 
$
122,132

 
$
121,522

 
$
133,308

Income from operations
 
6,055

 
13,502

 
15,505

 
18,677

Net income
 
3,419

 
7,912

 
8,888

 
11,817

 
 
 
 
 
 
 
 
 
Net income per share:
 
 
 
 
 
 
 
 
   Basic
 
$
0.12

 
$
0.27

 
$
0.31

 
$
0.41

   Diluted
 
$
0.12

 
$
0.27

 
$
0.31

 
$
0.41