Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Consolidated Statements of Changes in Shareholders' Equity (Deficit)

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Consolidated Statements of Changes in Shareholders' Equity (Deficit) - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment
Common Stock
Additional Paid-in Capital
Retained Earnings
Retained Earnings
Cumulative Effect, Period of Adoption, Adjustment
Accumulated Other Comprehensive Loss
Beginning balance at Mar. 31, 2018 $ (221,500) $ 1,160,300 $ 229,500 $ 185,600 $ (635,300) $ 1,160,300 $ (1,300)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 228,800       228,800    
Other comprehensive gain (loss) (29,000)           (29,000)
Stock-based compensation $ 12,500   500 12,000      
Accounting Standards Update [Extensible List] us-gaap:AccountingStandardsUpdate201602Member            
Dividends declared $ (176,700)       (176,700)    
Ending balance at Mar. 31, 2019 974,400 $ 200 230,000 197,600 577,100 $ 200 (30,300)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 241,500       241,500    
Other comprehensive gain (loss) (31,800)           (31,800)
Stock-based compensation 10,300   600 9,700      
Dividends declared (159,300)       (159,300)    
Ending balance at Mar. 31, 2020 1,035,300   230,600 207,300 659,500   (62,100)
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net income 262,800       262,800    
Other comprehensive gain (loss) 55,500           55,500
Stock-based compensation 18,000   800 17,200      
Issuance of ordinary shares 100     100      
Dividends declared (310,900)       (310,900)    
Ending balance at Mar. 31, 2021 $ 1,060,800   $ 231,400 $ 224,600 $ 611,400   $ (6,600)