XML 28 R13.htm IDEA: XBRL DOCUMENT v3.3.0.814
Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2015
Dec. 31, 2014
Accounting Policies [Abstract]      
Debt and Capital Lease Obligations $ 185,377 $ 185,377 $ 155,714
Long-term Debt, Fair Value 192,400 192,400 $ 165,500
Stock Repurchase Program, Authorized Amount $ 200,000 $ 200,000  
Stock Repurchased and Retired During Period, Shares 539,396 1,126,984  
Stock Repurchased and Retired During Period, Value $ 36,700 $ 79,100  
Total Stock Repurchased And Retired Shares 1,197,604 1,197,604  
Total Stock Repurchased And Retired Value $ 84,600 $ 84,600  
Stock Repurchase Program, Remaining Authorized Repurchase Amount $ 115,400 $ 115,400