Summary of Table Sets Forth the Effect of Restatement on Affected Line Items In Condensed Consolidated Statement of Shareholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	$ 759	$ (17,271)	$ (9,753)
Ending Balance	116,243	108,685	115,646
Retained Earnings [Member]
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	759	(17,271)	(9,753)
Ending Balance	941,176	$ 950,202	$ 940,449
As Previously Reported [Member]
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	3,622
Ending Balance	119,106
As Previously Reported [Member] | Retained Earnings [Member]
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	3,622
Ending Balance	944,039
Interest Method Adjustment [Member]
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	(2,863)
Ending Balance	(2,863)
Interest Method Adjustment [Member] | Retained Earnings [Member]
Condensed Consolidated Statement of Shareholders' Equity Data - Retained Earnings
Net income	(2,863)
Ending Balance	$ (2,863)