Summary of Table Sets Forth the Effect of Restatement on Affected Line Items in Condensed Consolidated Statement of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Condensed Consolidated Statement of Cash Flows Data:
Net income	$ 759	$ (17,271)	$ (9,753)
Deferred income taxes	(2,317)	(15,384)
Accretion of discount on PEAKS Trust senior debt	6,452	652
Other operating assets and liabilities	(4,032)	(5,912)
Net cash flows from operating activities	36,918	$ (43,915)
As Previously Reported [Member]
Condensed Consolidated Statement of Cash Flows Data:
Net income	3,622
Deferred income taxes	(416)
Accretion of discount on PEAKS Trust senior debt	1,541
Other operating assets and liabilities	(3,885)
Net cash flows from operating activities	36,918
Interest Method Adjustment [Member]
Condensed Consolidated Statement of Cash Flows Data:
Net income	(2,863)
Deferred income taxes	(1,901)
Accretion of discount on PEAKS Trust senior debt	4,911
Other operating assets and liabilities	(147)
Net cash flows from operating activities	$ 0