Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies ASC 606 Adjustments Statements of Comprehensive Income (Loss) (Details)

v3.19.1
Organization and Significant Accounting Policies ASC 606 Adjustments Statements of Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                 $ 206,587 $ 254,127 $ 47,157
Net Income (Loss) Available to Common Stockholders, Basic $ 93,420 $ 40,806 $ 37,141 $ 35,220 $ 2,280 $ 18,589 $ 12,819 $ 220,439 206,587 254,127 47,157
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax                 (24,065)   (15,284)
Other comprehensive income (loss) before reclassifications                 (28,959) 41,867  
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax                 (588) (1,753) 3,274
Other comprehensive income (loss) (2)                 (27,926) 39,014 (10,387)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent                 $ 178,661 293,141 36,770
Scenario, Previously Reported                      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                   254,529 47,989
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax                   35,054  
Other comprehensive income (loss) (2)                   38,797  
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest                   293,326 37,602
Restatement Adjustment | Accounting Standards Update 2014-09 [Member]                      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                   (402) (832)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax                   217  
Other comprehensive income (loss) (2)                   217  
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest                   $ (185) $ (832)