Net (Loss) Income Per Common Share (Reconciliation of Weighted Average Shares Outstanding and Diluted Weighted Average Shares Outstanding) (Detail) - shares shares in Thousands	3 Months Ended			9 Months Ended
	Mar. 31, 2018		Mar. 31, 2017	Mar. 31, 2018		Mar. 31, 2017
Earnings Per Share [Abstract]
Weighted average shares outstanding	35,304	[1]	34,769	35,162	[1]	31,453
Dilutive effect of stock options and restricted stock awards and units	0		352	0		339
Diluted weighted average shares outstanding	35,304	[1]	35,121	35,162	[1]	31,792

[1] (as restated)