CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands		Total		Preferred Stock	Common Stock		Treasury Stock	Additional Paid-in Capital	[2]	Retained Earnings	Accumulated Other Comprehensive Loss, Net of Income Tax
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, par value, in dollars per share		$ 0.01
Preferred stock, beginning balance (in shares) at Jun. 30, 2015				515
Beginning balance at Jun. 30, 2015		$ 533,526	[1]	$ 5,063	$ 638	[2]	$ (24,644)	$ 296,035		$ 265,833	$ (9,399)
Common stock, shares, issued, beginning balance (in shares) at Jun. 30, 2015		63,145,364			63,145,364	[2]
Common stock, outstanding, beginning balance (in shares) at Jun. 30, 2015		62,075,004			62,075,004	[2]	1,070,360
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		$ 89,564								89,564
Other comprehensive income		1,176									1,176
Cash dividends on preferred stock		(232)								(232)
Issuance of common stock (in shares)	[2]				723,808
Issuance of common stock		21,120			$ 2	[2]		21,118
Share-based compensation, issued (in shares)	[2]				25,394
Stock-based compensation expense, outstanding (in shares)	[2]				25,394
Stock-based compensation expense		8,470			$ 1	[2]		8,469
Restricted stock grants and tax benefits, issued (in shares)	[2]				202,404
Restricted stock grants and tax benefits, treasury shares							(46,678)
Restricted stock grants and tax benefits, outstanding (in shares)	[2]				155,726
Restricted stock grants and tax benefits		$ (1,479)			$ 1	[2]	$ (3,002)	1,522
Stock option exercises and tax benefits, issued (in shares)		80,800			80,800	[2]
Stock option exercises and tax benefits		$ 1,144						1,144
Preferred stock, ending balance (in shares) at Mar. 31, 2016				515
Ending balance at Mar. 31, 2016		$ 653,289	[1]	$ 5,063	$ 642	[2]	$ (27,646)	$ 328,288		$ 355,165	$ (8,223)
Common stock, shares, issued, ending balance (in shares) at Mar. 31, 2016		64,177,770			64,177,770	[2]
Common stock, outstanding, ending balance (in shares) at Mar. 31, 2016		63,060,732			63,060,732	[2]	1,117,038
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock, par value, in dollars per share		$ 0.01

[1] Common stock amounts have been retroactively restated for all prior periods presented to reflect the four-for-one forward split of the Company’s common stock effected in the form of a stock dividend that was distributed on November 17, 2015

[2] Common stock amounts have been retroactively restated for all prior periods presented to reflect the four-for-one forward split of the Company’s common stock effected in the form of a stock dividend that was distributed on November 17, 2015. The par value of common stock remains unchanged at $0.01 per share after the aforementioned forward stock split. As a result, the stated capital attributable to common stock increased proportionately and the additional paid-in capital decreased by the amount by which the stated capital increased.