XML 74 R60.htm IDEA: XBRL DOCUMENT v3.3.1.900
Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Leases [Abstract]      
Rental expense for property, plant and equipment $ 18,900 $ 19,700 $ 51,700
Operating leases      
2016 12,918    
2017 9,245    
2018 6,709    
2019 5,271    
2020 4,935    
After 2020 20,643    
Minimum rentals to be received under noncancelable subleases $ 400