| Schedule of Stockholders Equity | 
A summary of changes in shareholders’ equity is presented below (dollars in thousands): 
 
 
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   | 
   | 
Six Months Ended June 30, 2015  | 
 
   | 
   | 
(In thousands)  | 
 
   | 
   | 
 Number of 
Shares 
 | 
   | 
 Common 
Stock 
 | 
   | 
 Additional 
Paid-In 
Capital 
 | 
   | 
 Retained 
Earnings 
 | 
   | 
Total  | 
 
Balance at December 31, 2014  | 
   | 
39,147  | 
 
  | 
   | 
$  | 
391  | 
 
  | 
   | 
$  | 
538,788  | 
 
  | 
   | 
$  | 
570,310  | 
 
  | 
   | 
$  | 
1,109,489  | 
 
  | 
 
Net earnings  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
45,533  | 
 
  | 
   | 
45,533  | 
 
  | 
 
Exercise/vesting of equity awards  | 
   | 
514  | 
 
  | 
   | 
6  | 
 
  | 
   | 
2,833  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2,839  | 
 
  | 
 
Excess income tax benefit from stock-based awards  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2,012  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2,012  | 
 
  | 
 
Equity award compensation expense  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
8,465  | 
 
  | 
   | 
—  | 
 
  | 
   | 
8,465  | 
 
  | 
 
Balance at June 30, 2015  | 
   | 
39,661  | 
 
  | 
   | 
$  | 
397  | 
 
  | 
   | 
$  | 
552,098  | 
 
  | 
   | 
$  | 
615,843  | 
 
  | 
   | 
$  | 
1,168,338  | 
 
  | 
 
  
  
  
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   | 
   | 
Six Months Ended June 30, 2014  | 
 
   | 
   | 
(In thousands)  | 
 
   | 
   | 
 Number of 
Shares 
 | 
   | 
 Common 
Stock 
 | 
   | 
 Additional 
Paid-In 
Capital 
 | 
   | 
 Retained 
Earnings 
 | 
   | 
Total  | 
 
Balance at December 31, 2013  | 
   | 
36,244  | 
 
  | 
   | 
$  | 
362  | 
 
  | 
   | 
$  | 
412,961  | 
 
  | 
   | 
$  | 
428,069  | 
 
  | 
   | 
$  | 
841,392  | 
 
  | 
 
Net earnings  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
60,456  | 
 
  | 
   | 
60,456  | 
 
  | 
 
Exercise/vesting of equity awards  | 
   | 
348  | 
 
  | 
   | 
4  | 
 
  | 
   | 
703  | 
 
  | 
   | 
—  | 
 
  | 
   | 
707  | 
 
  | 
 
Excess income tax benefit from stock-based awards  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2,194  | 
 
  | 
   | 
—  | 
 
  | 
   | 
2,194  | 
 
  | 
 
Equity award compensation expense  | 
   | 
—  | 
 
  | 
   | 
—  | 
 
  | 
   | 
5,264  | 
 
  | 
   | 
—  | 
 
  | 
   | 
5,264  | 
 
  | 
 
Issuance of stock (1)  | 
   | 
2,530  | 
 
  | 
   | 
25  | 
 
  | 
   | 
110,395  | 
 
  | 
   | 
—  | 
 
  | 
   | 
110,420  | 
 
  | 
 
Other  | 
   | 
—  | 
 
  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
(114  | 
)  | 
   | 
$  | 
—  | 
 
  | 
   | 
$  | 
(114  | 
)  | 
 
Balance at June 30, 2014  | 
   | 
39,122  | 
 
  | 
   | 
$  | 
391  | 
 
  | 
   | 
$  | 
531,403  | 
 
  | 
   | 
$  | 
488,525  | 
 
  | 
   | 
$  | 
1,020,319  | 
 
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(1)   | 
In January 2014, we issued 2,530,000 shares of common stock in a secondary public offering, par value $0.01 per share, at a price of $45.75 per share.
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