XML 68 R58.htm IDEA: XBRL DOCUMENT v3.10.0.1
Fair Value Measurements (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Gain on cost method investments $ 8,487 $ 0   $ 8,487 $ 0
Impairment of long-lived assets 8,100        
Impairment of goodwill and other long-lived assets $ 8,109 312 $ 9,200 $ 8,109 9,536
Loss on write-downs of cost method investments   $ 200     $ 200