Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Thousands, unless otherwise specified	Total	Accumulated Other Comprehensive Income (Loss) [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Common Class A [Member] Common Stock [Member]	Common Class B [Member] Common Stock [Member]	The 1984 ESOP [Member]	The 1984 ESOP [Member] Additional Paid-in Capital [Member]	The 1984 ESOP [Member] Common Class A [Member] Common Stock [Member]
Balance, beginning of period at Jun. 30, 2014	$ 136,314	$ (20,425)	$ 54,063	$ 95,715	$ 6,166	$ 795
Total comprehensive income (loss)	(8,420)	(11,790)		3,370
Dividends ($0.20 per share)	(1,396)			(1,396)
Repurchase of shares	(33)		(31)			(2)
Issuance of stock under ESOP							131	122	9
Issuance of stock under Long Term Incentive Plan	48		45		3
Issuance of stock under ESPP	125		111			14
Issuance of stock for length of service awards	76		71		5
Stock-based compensation	87		87
Conversion of common stock					16	(16)
Accumulated balance consists of:
Translation loss		(30,079)
Pension and postretirement plans, net of taxes		(2,136)
	(32,215)	(32,215)
Balance, end of period at Dec. 31, 2014	$ 126,932	$ (32,215)	$ 54,468	$ 97,689	$ 6,199	$ 791