CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Convertible Series C Preferred Stock	Convertible Preferred Stock	Convertible Preferred Stock Convertible Series C Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss, Net of Income Tax	Treasury Stock
Beginning balance at Jun. 30, 2012	$ 206,620		$ 24,502		$ 123	$ 105,683	$ 88,357	$ (5,435)	$ (6,610)
Common stock, outstanding, beginning balance (in shares) at Jun. 30, 2012	11,512,536				11,512,536
Preferred stock, beginning balance (in shares) at Jun. 30, 2012			20,647
Common stock, shares, issued, beginning balance (in shares) at Jun. 30, 2012	12,321,578				12,321,578
Treasury stock, beginning balance (in shares) at Jun. 30, 2012	(809,042)				(809,042)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,159						29,159
Net unrealized gain from investment securities - net of income tax expense	(2,067)							(2,067)
Cash dividends on preferred stock	(758)						(758)
Stock issued (in shares)				1,857	200,000
Issuance of common stock, shares outstanding (in shares)					200,000
Issuance of common stock, amount	6,765	18,552		18,552	2	6,763
Convert preferred stock to common stock (in shares)			20,132		1,246,571
Convert preferred stock to common stock, shares outstanding (in shares)					1,246,571
Convert preferred stock to common stock			(19,439)		12	19,427
Stock-based compensation expense	2,435					2,435
Restricted stock grants, issued					99,750
Shares repurchased to fund employees' income tax liabilities from stock based compensation					(34,407)
Restricted stock grants, shares outstanding (in shares)					65,343
Restricted stock grants	(391)				2	441			(834)
Stock option exercises and tax benefits of equity compensation, shares issued (in shares)	25,325				25,325
Stock option exercises and tax benefits of equity compensation, shares outstanding (in shares)					25,325
Stock option exercises and tax benefits of equity compensation	389				0	389			0
Ending balance at Mar. 31, 2013	$ 260,704		$ 23,615		$ 139	$ 135,138	$ 116,758	$ (7,502)	$ (7,444)
Common stock, outstanding, ending balance (in shares) at Mar. 31, 2013	13,049,775				13,049,775
Preferred stock, ending balance (in shares) at Mar. 31, 2013		1,857	2,372
Common stock, shares, issued, ending balance (in shares) at Mar. 31, 2013	13,893,224				13,893,224
Treasury stock, ending balance (in shares) at Mar. 31, 2013	(843,449)				(843,449)