Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivable, current	$ 20,106	$ 20,194
Stockholders' Equity:
Preferred stock, par value (in USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000.0	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in USD per share)	$ 0.01
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	53,939,000	53,805,000
Treasury stock (in shares)	3,750,000	3,719,000