Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) (Details)

v3.10.0.1
Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net [Rollforward]        
Beginning balance     $ 1,855,578  
Reclassification adjustment due to adoption of ASU 2016-01 $ 0 $ 0 (4,876) $ 0
Ending Balance 1,810,496   1,810,496  
Foreign currency        
Accumulated Other Comprehensive Income (Loss), Net [Rollforward]        
Beginning balance     (5,404)  
Other comprehensive loss before reclassifications     (7,600)  
Reclassification adjustment due to adoption of ASU 2016-01     0  
Net other comprehensive loss     (7,600)  
Ending Balance (13,004)   (13,004)  
Unrealized gain (loss) in Accumulated OCI        
Accumulated Other Comprehensive Income (Loss), Net [Rollforward]        
Beginning balance     4,876  
Other comprehensive loss before reclassifications     0  
Reclassification adjustment due to adoption of ASU 2016-01     (4,876)  
Net other comprehensive loss     (4,876)  
Ending Balance 0   0  
AOCI Attributable to Parent        
Accumulated Other Comprehensive Income (Loss), Net [Rollforward]        
Beginning balance     (528)  
Other comprehensive loss before reclassifications     (7,600)  
Reclassification adjustment due to adoption of ASU 2016-01     (4,876)  
Net other comprehensive loss     (12,476)  
Ending Balance $ (13,004)   $ (13,004)