Consolidated Statements of Stockholders' Equity (USD $) In Thousands	Total	Common Stock	Additional paid-in capital	Treasury stock	Accumulated other comprehensive income (loss)	Accumulated deficit
Beginning balance at Jun. 30, 2009	$ 159,856	$ 483	$ 464,720		$ (538)	$ (304,809)
Beginning balance, Shares at Jun. 30, 2009		48,312
Net income (loss)	7,040					7,040
Net unrealized change on investments (net of tax of $0)	9,181				9,181
Issuance of restricted common stock, Value		2	(2)
Issuance of restricted common stock, Shares		160
Forfeiture of restricted common stock, Value	(2)		(2)
Forfeiture of restricted common stock, Shares		(5)
Stock-based compensation, Value	1,048		1,048
Stock-based compensation, Shares		5
Issuance of shares under Employee Stock Purchase Plan, Value	67		67
Issuance of shares under Employee Stock Purchase Plan, Shares		37
Ending balance at Jun. 30, 2010	177,190	485	465,831		8,643	(297,769)
Ending balance, Shares at Jun. 30, 2010		48,509
Net income (loss)	(56,780)					(56,780)
Net unrealized change on investments (net of tax of $0)	872				872
Forfeiture of restricted common stock, Value	(108)	(1)	(107)
Forfeiture of restricted common stock, Shares		(88)
Stock-based compensation, Value	998		998
Stock-based compensation, Shares		5
Issuance of shares under Employee Stock Purchase Plan, Value	56	1	55
Issuance of shares under Employee Stock Purchase Plan, Shares		32
Ending balance at Jun. 30, 2011	122,228	485	466,777		9,515	(354,549)
Ending balance, Shares at Jun. 30, 2011		48,458
Net income (loss)	(29,437)					(29,437)
Net unrealized change on investments (net of tax of $0)	735				735
Forfeiture of restricted common stock, Value	(3)	(1)	(2)
Forfeiture of restricted common stock, Shares		(22)
Stock-based compensation, Value	171		171
Stock-based compensation, Shares		5
Purchase of treasury stock, at cost	(10,988)			(10,988)
Retirement of treasury stock, at cost		(75)	(10,913)	10,988
Retirement of treasury stock, at cost, Shares		(7,531)
Issuance of shares under Employee Stock Purchase Plan, Value	23		23
Issuance of shares under Employee Stock Purchase Plan, Shares		18
Ending balance at Dec. 31, 2011	82,729	409	456,056		10,250	(383,986)
Ending balance, Shares at Dec. 31, 2011	40,928	40,928
Net income (loss)	(9,040)					(9,040)
Net unrealized change on investments (net of tax of $0)	(1,546)				(1,546)
Forfeiture of restricted common stock, Value	(6)		(6)
Forfeiture of restricted common stock, Shares		(6)
Stock-based compensation, Value	604		604
Issuance of shares under Employee Stock Purchase Plan, Value	52	1	51
Issuance of shares under Employee Stock Purchase Plan, Shares		40
Ending balance at Dec. 31, 2012	$ 72,793	$ 410	$ 456,705		$ 8,704	$ (393,026)
Ending balance, Shares at Dec. 31, 2012	40,928	40,962