Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income(Loss)	Noncontrolling Interest
Balances, beginning at Jun. 30, 2014	$ 282,283	$ 279	$ 119,777	$ 177,237	$ (16,595)	$ (182)	$ 1,767
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contributions from Non-controlling Interest	8,546						8,546
Net income (loss)	(1,898)
Other comprehensive loss	(5,744)					(5,744)
Treasury Shares Sold to Employee Stock Purchase Plan	298		134		164
Exercise of stock options	493		(275)	0	768
Issuance of deferred shares	0		(4,702)		4,702
Treasury shares repurchased to satisfy tax withholding obligations	(2,528)				(2,528)
Tax effect of exercised stock options and vesting of deferred shares	1,802		1,802
Open market purchase of treasury shares	(5,000)				(5,000)
Stock-based compensation expense	6,302		6,302
Balances, ending at Jun. 30, 2015	284,554	279	123,038	194,394	(18,489)	(5,926)	(8,742)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	17,157			17,157
Net Income (Loss) Attributable to Noncontrolling Interest	(19,055)
Capital contributions from Non-controlling Interest	10,892						10,892
Net income (loss)	25,537
Other comprehensive loss	(919)					(919)
Treasury Shares Sold to Employee Stock Purchase Plan	335		177		158
Exercise of stock options	638		14	0	624
Issuance of deferred shares	0		(5,849)		5,849
Treasury shares repurchased to satisfy tax withholding obligations	(4,588)				(4,588)
Tax effect of exercised stock options and vesting of deferred shares	3,261		3,261
Open market purchase of treasury shares	(10,461)				(10,461)
Stock-based compensation expense	6,317		6,317
Balances, ending at Jun. 30, 2016	315,566	279	126,958	223,257	(26,907)	(6,845)	(1,176)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	28,863			28,863
Net Income (Loss) Attributable to Noncontrolling Interest	(3,326)						(3,326)
Cumulative Effect of New Accounting Principle in Period of Adoption	0		100	(100)
Beginning equity balances, as adjusted	315,566	279	127,058	223,157	(26,907)	(6,845)	(1,176)
Capital contributions from Non-controlling Interest	855						855
Net income (loss)	138
Other comprehensive loss	(479)					(479)
Treasury Shares Sold to Employee Stock Purchase Plan	305		(25)		330
Exercise of stock options	253		(317)		570
Issuance of deferred shares	0		(5,758)		5,758
Treasury shares repurchased to satisfy tax withholding obligations	(2,290)				(2,290)
Stock-based compensation expense	7,461		7,461
Balances, ending at Jun. 30, 2017	321,809	$ 279	$ 128,419	222,974	$ (22,539)	$ (7,324)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	(183)			$ (183)
Net Income (Loss) Attributable to Noncontrolling Interest	$ 321