Components of Income Before Income Taxes and Income Tax Expense (Benefit) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
(Loss) income before income taxes:
United States									$ (23,639)	$ 31,277	$ 26,007
Foreign									477	494	495
(Loss) income before income taxes	(3,891)	(1,444)	(6,976)	(10,851)	6,306	7,625	13,873	3,967	(23,162)	31,771	26,502
Federal:
Current									(427)	10,591	4,974
Deferred									(9,376)	(2,582)	1,992
Federal Income Tax Expense (Benefit), Continuing Operations, Total									(9,803)	8,009	6,966
State:
Current									192	1,401	855
Deferred									(707)	(335)	48
State and Local Income Tax Expense (Benefit), Continuing Operations, Total									(515)	1,066	903
Foreign:
Current									364	77	161
Deferred									0	0	30
Foreign, Income Tax expense benefit									364	77	191
Income tax expense (benefit)	$ (1,879)	$ (2,232)	$ (2,192)	$ (3,651)	$ 630	$ 2,380	$ 4,828	$ 1,314	$ (9,954)	$ 9,152	$ 8,060