XML 130 R110.htm IDEA: XBRL DOCUMENT v3.3.1.900
Employee Benefit Plans (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Contributions based on wages paid to covered employees $ 1.4 $ 7.1 $ 8.8
Voluntary contributions to the 401(k) profit-sharing plans and trusts $ 3.3 $ 5.1 $ 5.5