Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Beginning balance (in shares) at Dec. 31, 2014   39,147,000    
Beginning balance at Dec. 31, 2014 $ 1,109,489 $ 391 $ 538,788 $ 570,310
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net earnings 128,738     128,738
Exercise/vesting of equity awards (in shares)   522,000    
Exercise/vesting of equity awards 2,886 $ 6 2,880  
Excess income tax benefit from stock-based awards 2,043   2,043  
Equity award compensation expense 15,781   15,781  
Ending balance (in shares) at Dec. 31, 2015   39,669,000    
Ending balance at Dec. 31, 2015 1,258,937 $ 397 559,492 699,048
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net earnings 149,541     149,541
Exercise/vesting of equity awards (in shares)   362,000    
Exercise/vesting of equity awards 232 $ 3 229  
Excess income tax benefit from stock-based awards (956)   (956)  
Equity award compensation expense $ 13,741   13,741  
Ending balance (in shares) at Dec. 31, 2016 40,030,518 40,031,000    
Ending balance at Dec. 31, 2016 $ 1,421,495 $ 400 572,506 848,589
Increase (Decrease) in Stockholders' Equity [Roll Forward]        
Net earnings 143,255     143,255
Exercise/vesting of equity awards (in shares)   300,000    
Exercise/vesting of equity awards 0 $ 3 (3)  
Equity award compensation expense $ 12,075   12,075  
Ending balance (in shares) at Dec. 31, 2017 40,330,741 40,331,000    
Ending balance at Dec. 31, 2017 $ 1,576,825 $ 403 $ 584,578 $ 991,844