Quarterly report pursuant to Section 13 or 15(d)

Debt (CredAg) (Details)

v3.5.0.2
Debt (CredAg) (Details) - USD ($)
$ in Thousands
9 Months Ended
Nov. 19, 2015
Sep. 30, 2016
Credit Agreement    
Debt    
Credit facility amount $ 100,000  
Amount outstanding   $ 0
Voting equity of foreign subsidiary pledged (as a percent) 66.00%  
Non-voting equity of foreign subsidiary pledged (as a percent) 100.00%  
Debt instrument covenant, prepayment term   90 days
Debt instrument covenant, leverage ratio   2.00%
Estimated prepayment portion   $ 27,113
Letters of credit    
Debt    
Credit facility amount $ 5,000  
Term Notes    
Debt    
Amount outstanding   $ 144,000
Face amount 160,000  
Periodic payment $ 2,000  
Minimum | Credit Agreement | LIBOR    
Debt    
Spread on variable rate basis (as a percent) 1.50%  
Maximum | Credit Agreement | LIBOR    
Debt    
Spread on variable rate basis (as a percent) 3.25%