Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical)

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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2019
Mar. 31, 2019
Statement of Financial Position [Abstract]    
Accrued expenses $ 130,991 $ 93,761
Property, Plant and Equipment, Net [Abstract]    
Property and equipment, accumulated depreciation $ 911,634 $ 880,451
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, authorized shares 10,000,000 10,000,000
Preferred stock, issued shares 0 0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]    
Common stock, par value (in dollars per share) $ 0.01000566358 $ 0.00999619522
Common stock, authorized shares 175,000,000 175,000,000
Common stock, issued shares 58,267,000 57,822,000