XML 90 R72.htm IDEA: XBRL DOCUMENT v3.6.0.2
Goodwill (Goodwill Rollforward) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Goodwill [Line Items]      
Goodwill, Acquired During Period $ 153,628 $ 0 $ 0
Goodwill, Impairment Loss (12,462) 0 0
Goodwill [Roll Forward]      
Beginning balance 685,310 685,310 685,310
Final purchase price adjustment 0 0  
Ending balance $ 826,476 $ 685,310 $ 685,310