XML 42 R44.htm IDEA: XBRL DOCUMENT v2.4.0.8
Share Repurchase Program - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Jan. 31, 2012
Rule 10b-18
Jul. 31, 2013
Rule 10b-18
Subsequent Event [Member]
Schedule Of Share Repurchase Programs [Line Items]            
Common stock shares, remaining authorized 2,041,214   2,041,214   1,966,700  
Common stock, additional number of shares authorized to repurchase           2,000,000
Purchase of Treasury Stock, shares 138,200 172,480 442,938 1,239,222    
Purchase of Treasury Stock, per share value $ 16.92 $ 16.58 $ 16.23 $ 19.09    
Purchase of Treasury Stock $ 2,338 $ 2,859 $ 7,189 $ 23,652