• Filing Date: 2020-03-06
  • Form Type: 10-K
  • Description: Annual report
v3.19.3.a.u2
Stockholders' Equity (Share Repurchase Agreement) - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Mar. 03, 2017
Class of Stock [Line Items]          
Repurchase and retirement of common stock, value   $ 1,203 $ 1,151 $ 21,318  
4.25% Convertible Senior Notes [Member]          
Class of Stock [Line Items]          
Debt instrument stated interest rate 4.25% 4.25%     4.25%
Share Repurchase Plan [Member]          
Class of Stock [Line Items]          
Repurchase and retirement of common stock, value   $ 18,851 $ 20,015 $ 15,154  
Common stock repurchased and retired, price per share   $ 41.49 $ 39.09    
Institutional Investors [Member] | Share Repurchase Plan [Member]          
Class of Stock [Line Items]          
Repurchase and retirement of common stock, value $ 20,345        
Repurchase and retirement of common stock, shares 413,600        
Common stock repurchased and retired, price per share $ 49.19