XML 85 R72.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Net operating loss and tax credit carryforwards          
Income tax charge net of valuation allowance   $ 21,700      
Tax expense due to remeasurment of deferred tax assets   35,000      
Valuation allowance   25,148 $ 6,626    
Reduction to federal valuation allowance as result of tax act   4,100      
Cumulative amount of unremitted earnings of non-Swiss subsidiaries   90,400      
Deferred income tax liability   600      
Unrecognized tax benefits, uncertain tax positions   69,131 63,667 $ 69,879 $ 79,023
Payment of tax settlement to tax authority in foreign jurisdiction $ 1,900        
Interest and penalties in income tax expense   600 700 300  
Accrued interest and penalties related to uncertain tax positions   2,300 $ 3,000 $ 3,600  
Possible decreases in balances related to lapse of statutes of limitations   $ 21,900      
Swiss          
Net operating loss and tax credit carryforwards          
Statutory income tax rate (as a percent)   8.50% 8.50% 8.50%  
United States          
Net operating loss and tax credit carryforwards          
Statutory income tax rate (as a percent)   31.60%      
Foreign          
Net operating loss and tax credit carryforwards          
Foreign net operating loss carryforwards   $ 217,100      
Foreign tax credit carryforwards   50,500      
Non-current income tax payable          
Net operating loss and tax credit carryforwards          
Unrecognized tax benefits, uncertain tax positions   35,000 $ 51,800    
Current income tax payable          
Net operating loss and tax credit carryforwards          
Unrecognized tax benefits, uncertain tax positions     1,500    
California Franchise Tax Board | State and Local Jurisdiction          
Net operating loss and tax credit carryforwards          
Valuation allowance   22,100 $ 5,900    
Increase (decrease) in valuation allowance for foreign tax credit carryforwards   3,500      
Various Tax Credit Carryforwards          
Net operating loss and tax credit carryforwards          
Valuation allowance   700      
Accounting Standards Update 2016-09          
Net operating loss and tax credit carryforwards          
Increase (decrease) in valuation allowance for foreign tax credit carryforwards   18,000      
Accounting Standards Update 2016-09 | Foreign          
Net operating loss and tax credit carryforwards          
Increase (decrease) in valuation allowance for foreign tax credit carryforwards   6,400      
Accounting Standards Update 2016-09 | California Franchise Tax Board | State and Local Jurisdiction          
Net operating loss and tax credit carryforwards          
Increase (decrease) in valuation allowance for foreign tax credit carryforwards   $ 11,600