XML 116 R70.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Income Taxes (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Operating Loss Carryforwards [Line Items]      
Federal income tax rate, percent   21.00% 35.00%
Tax Act income tax benefit     $ 39,300,000
Income tax provision $ 125,749,000 $ 109,106,000 $ 90,699,000
Actual income tax rates 27.90% 27.60% 28.50%
Income tax expense, foreign minimum tax $ 100,000 $ 600,000  
Cash and cash equivalents 358,818,000 363,907,000  
Unrecognized income tax benefits 0 0  
Deferred tax liabilities, net 71,746,000 70,848,000  
Valuation allowance for deferred tax assets 3,463,000 3,855,000  
Trading losses 0 4,200,000  
Other Assets      
Operating Loss Carryforwards [Line Items]      
Deferred tax liabilities, net 3,400,000 4,700,000  
Other Long-Term Obligations      
Operating Loss Carryforwards [Line Items]      
Deferred tax liabilities, net 75,200,000 $ 75,500,000  
Non-US [Member] | Subsidiaries [Member]      
Operating Loss Carryforwards [Line Items]      
Undistributed earnings of foreign subsidiaries 69,800,000    
Cash and cash equivalents $ 67,700,000