Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings/(Accumulated Deficit)	[1]	Retained Earnings/(Accumulated Deficit) Cumulative Effect, Period of Adoption, Adjustment	[1]	Treasury Stock	Accumulated Other Comprehensive (Loss) Income
Beginning balance (in shares) at Jun. 30, 2018				84,997,000
Beginning balance at Jun. 30, 2018		$ 187,129		$ 850	$ 134,048	$ 129,472				$ (77,241)	$ 0
Beginning balance (Accounting Standards Update 2016-09) at Jun. 30, 2018			$ 353					$ 353
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		72,579				72,579
Stock options exercised (in shares)				5,642,000
Stock options exercised		4,300		$ 56	4,244
Dividends paid	[2]	(1,958)				(1,958)
Common stock repurchased (in shares)				(20,000)
Common stock repurchased		(34)								(34)
Share-based compensation expense		86			86
Ending balance (in shares) at Jun. 30, 2019				90,619,000
Ending balance at Jun. 30, 2019		262,455		$ 906	138,378	200,446				(77,275)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		81,147				81,147
Stock options exercised (in shares)				5,495,000
Stock options exercised		5,506		$ 56	5,450
Gain (loss) on cash flow hedge, net of tax		(1,295)									(1,295)
Amount reclassified into earnings, net tax		41									41
Dividends paid	[3]	(207,341)				(207,341)
Dividends paid on unexercised stock options		(9,221)			(9,221)
Dividends paid on unexercised stock options		(58,438)			(58,438)
Share-based compensation expense		9,483			9,483
Issuance and conversion of preferred shares, net of transaction fees (in shares)				51,571,000
Issuance and conversion of preferred shares, net of transaction fees		130,047		$ 516	129,531
Treasury stock retired (in shares)				(3,520,000)
Treasury stock retired		195		$ 36		77,044				77,275
Proceeds from initial public offering, net of underwriters’ discounts and commissions and other offering expenses (in shares)				18,026,000
Proceeds from initial public offering, net of underwriters’ discounts and commissions and other offering expenses		333,110		$ 180	332,930
Ending balance (in shares) at Jun. 30, 2020				162,191,000
Ending balance at Jun. 30, 2020		545,689		$ 1,622	548,113	(2,792)				0	(1,254)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 131,046				131,046
Stock options exercised (in shares)		1,695,152		1,213,000
Stock options exercised		$ (9,461)		$ 12	(9,473)
Gain (loss) on cash flow hedge, net of tax		941									941
Amount reclassified into earnings, net tax		542									542
Issuance of common stock pursuant to employee stock purchase plan (in shares)				106,000
Issuance of common stock pursuant to employee stock purchase plan and vesting of restricted stock unit awards		986		$ 1	985
Share-based compensation expense		5,146			5,146
Ending balance (in shares) at Jun. 30, 2021				163,510,000
Ending balance at Jun. 30, 2021		$ 674,889		$ 1,635	$ 544,771	$ 128,254				$ 0	$ 229

[1] As adjusted for the adoption of ASC 606 using the full retrospective method.

[2] Dividends paid per share, including common shares and series A-D, were $0.12 for the year ended June 30, 2019.

[3] Dividends paid for common stock and unexercised stock options were $1.96 per share and $15.66 per share for preferred series A-D during the year ended June 30, 2020. Refer to Note 12 for further details.