CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Jun. 30, 2021
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 1,216	$ 1,314
Preferred stock, par value (USD per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)	5,000,000	5,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized (shares)	150,000,000	150,000,000
Common stock, shares issued (shares)	111,004,000	109,507,000
Common stock, shares, outstanding (shares)	93,329,000	99,069,000
Treasury stock, shares (shares)	17,673,000	10,438,000