Condensed Consolidated Statements of Stockholders' Equity (unaudited) (USD $) In Thousands	Common Class A [Member]	Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Jun. 30, 2011	$ 5,933	$ 801	$ 51,411	$ 96,477	$ (1,961)	$ 152,661
Net earnings (loss)				2,249		2,249
Other comprehensive income (loss)					(10,931)	(10,931)
Dividends ($0.10 per share)				(674)		(674)
Issuance of stock under ESOP	10		96			106
Stock-based compensation			38			38
Conversion	13	(13)
Balance at Sep. 30, 2011	5,956	788	51,545	98,052	(12,892)	143,449
Balance at Jun. 30, 2012	6,017	753	51,941	94,661	(25,534)	127,838
Translation loss					(15,269)
Pension and postretirement plans net of taxes					(9,641)
					(24,910)	(24,910)
Net earnings (loss)				(351)		(351)
Other comprehensive income (loss)					624	624
Dividends ($0.10 per share)				(679)		(679)
Issuance of stock under ESOP	8		84			92
Issuance of stock under ESPP		15	94			109
Stock-based compensation			41			41
Conversion	4	(4)
Balance at Sep. 30, 2012	$ 6,029	$ 764	$ 52,160	$ 93,631	$ (24,910)	$ 127,674