XML 28 R47.htm IDEA: XBRL DOCUMENT v2.4.0.8
Stockholders' Equity (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Stockholders' Equity Note [Abstract]                      
Authorized number of shares to be repurchased (in shares) 15,500,000               15,500,000    
Repurchase of treasury stock (in shares)                 479,903 407,400  
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares)                 116,931 107,293  
Remaining number of shares authorized to be repurchased (in shares) 1,349,569               1,349,569    
Dividends declared per share of common stock (in dollars per share) $ 0.17 $ 0.17 $ 0.17 $ 0.17 $ 1.17 [1] $ 0.17 $ 0.17 $ 0.15      
Payments of Ordinary Dividends, Common Stock                 $ 17,386,000 $ 42,728,000 $ 15,742,000
Class of Stock [Line Items]                      
Preferred stock, authorized (in shares) 20,000,000       20,000,000       20,000,000 20,000,000  
Aggregate price paid related to tender offer shares repurchased                   3,162,000  
Common stock purchase right per preferred stock share (in shares)                 1    
Maximum [Member]
                      
Class of Stock [Line Items]                      
Range of price per share for tender offer         $ 31.00         $ 31.00  
Minimum [Member]
                      
Class of Stock [Line Items]                      
Range of price per share for tender offer         $ 27.00         $ 27.00  
Series A Junior Participating Preferred Stock [Member]
                      
Class of Stock [Line Items]                      
Preferred stock, authorized (in shares) 600,000               600,000    
Dutch auction [Member]
                      
Class of Stock [Line Items]                      
Range of price per share for tender offer         $ 31.00         $ 31.00  
Max amount of dollars that could be used to purchase shares under tender offer                   50,000,000  
Repurchase of common stock (in shares)                   80,983  
Aggregate price paid related to tender offer shares repurchased                   $ 3,200,000  
[1] (1) Includes a $1.00 per share special dividend