Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

Earnings Per Share (Details)		1 Months Ended	3 Months Ended		6 Months Ended		13 Months Ended
Earnings Per Share (Details)	Jun. 07, 2018	Mar. 31, 2020 USD ($) shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2021 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) $ / shares shares	Jun. 30, 2020 USD ($) shares	Sep. 30, 2020 USD ($)	Jun. 06, 2018 USD ($)
Antidilutive Securities Excluded from Computation of Earnings Per Share
Share repurchase program, authorized amount \| $								$ 50,000,000.0
Common stock repurchased and recorded as treasury stock (in shares) \| shares		2,716,034	0				12,661,581
Repurchase of treasury stock \| $		$ 36,200,000				$ 36,180,000	$ 200,000,000.0
Net Income (Numerator)
Basic EPS - common stock \| $			$ 53,763,000	$ 26,753,000	$ 97,450,000	52,706,000
Diluted EPS - common stock \| $			$ 53,763,000	$ 26,753,000	$ 97,450,000	$ 52,706,000
Weighted-Average Shares (Denominator)
Basic EPS - common stock (in shares) \| shares			123,592,695	123,200,127	123,459,461	123,747,727
Effect of dilutive securities:
Stock options, restricted stock, and ESPP shares (in shares) \| shares			731,193	230,764	874,766	306,564
Diluted EPS - common stock (shares) \| shares			124,323,888	123,430,891	124,334,227	124,054,291
Earnings Per Share
Basic EPS - common stock (in dollars per share) \| $ / shares			$ 0.44	$ 0.22	$ 0.79	$ 0.43
Diluted EPS - common stock (in dollars per share) \| $ / shares			$ 0.43	$ 0.22	$ 0.78	$ 0.42
Convertible Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share
Aggregate principal amount issued \| $			$ 217,500,000		$ 217,500,000				$ 217,500,000
Initial conversion rate	0.0450760				0.0450760
Stock options and restricted share awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive shares of common stock \| shares			544,925	1,450,408	775,710	737,208