INCOME TAXES (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Earnings before income taxes and noncontrolling interest [Abstract]
United States		$ 43,335,000	$ 27,914,000	$ 4,127,000
Foreign		1,421,000	4,115,000	(2,405,000)
Earnings before income taxes and noncontrolling interest		44,756,000	32,029,000	1,722,000
Currently payable [Abstract]
Federal		7,241,000	8,704,000	490,000
State		188,000	373,000	302,000
Foreign		3,531,000	2,633,000	1,674,000
Currently payable, total		10,960,000	11,710,000	2,466,000
Deferred [Abstract]
Federal		7,653,000	(315,000)	532,000
State		662,000	(97,000)	(58,000)
Foreign		(829,000)	1,766,000	(1,948,000)
Deferred, total		7,486,000	1,354,000	(1,474,000)
Total provision (benefit)		18,446,000	13,064,000	992,000
Deferred tax assets [Abstract]
Retirement plans and employee benefits		25,316,000	24,387,000
State net operating loss and other state credit carryforwards		14,000	240,000
Inventory		1,283,000	1,353,000
Reserves		2,016,000	1,810,000
Research & development capitalization		63,000	186,000
Foreign NOL carryforwards		4,359,000	3,379,000
Accruals		543,000	306,000
Other assets		96,000	124,000
Deferred tax assets, total		33,690,000	31,785,000
Deferred tax liabilities [Abstract]
Property, plant and equipment		8,780,000	6,704,000
Intangibles		5,869,000	6,313,000
Other liabilities		490,000	361,000
Deferred tax liabilities, total		15,139,000	13,378,000
Valuation allowance		(3,811,000)	(2,751,000)
Total net deferred tax assets		14,740,000	15,656,000
Additional valuation allowance		1,060,000
Number of identified and recorded out-of-period tax errors				3
Increase (decrease) in tax expense	608,000,000			(28,000)
Reconciliation of U.S. federal income taxes to actual income taxes [Abstract]
Rate of federal income tax (in hundredths)		35.00%	35.00%	35.00%
U.S. federal income tax at 35%		15,595,000	11,163,000	540,000
Increases (reductions) in tax resulting from [Abstract]
Foreign tax items		869,000	419,000	587,000
State taxes		797,000	129,000	160,000
Valuation allowance		1,060,000	2,491,000	48,000
Change in prior year estimate		96,000	(157,000)	(216,000)
Research & development tax credits		(215,000)	(387,000)	(184,000)
Section 199 deduction		(908,000)	(735,000)	0
Goodwill impairment		1,292,000	0	0
Other, net		(140,000)	141,000	57,000
Total provision (benefit)		18,446,000	13,064,000	992,000
Undistributed earnings of foreign subsidiaries		8,100,000
Open Tax Year		2008 through 2012
Number of audit cycles to be completed		1
Unrecognized tax benefits, which, if recognized would impact the effective tax rate		560,000
Reconciliation of unrecognized tax benefits [Roll Forward]
Unrecognized tax benefits, beginning of year		853,000	808,000
Additions based on tax positions related to the prior year		0	6,000
Additions based on tax positions related to the current year		107,000	136,000
Reductions based on tax positions related to the prior year		0	0
Subtractions due to statutes closing		(50,000)	(60,000)
Settlements with taxing authorities		(350,000)	(37,000)
Unrecognized tax benefits, end of year		560,000	853,000	808,000
Interest and penalties		$ 41,000	$ 136,000