XML 89 R79.htm IDEA: XBRL DOCUMENT v3.19.2
Income Taxes Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Income Tax Examination [Line Items]          
Effective income tax rate reconciliation, percent 30.00% 50.00% 42.00% 5.00%  
Unrecognized tax benefits $ 115,282   $ 115,282   $ 112,558
Effective income tax rate reconciliation, at federal statutory income tax rate, percent 21.00% 21.00% 21.00%    
Minimum [Member]          
Income Tax Examination [Line Items]          
Open tax year     2010    
Maximum [Member]          
Income Tax Examination [Line Items]          
Open tax year     2017