Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
The 2013 ESOP [Member]
Supplemental disclosure of non-cash activities:
Issuance of stock under 2013 ESOP			$ 773,000
Net earnings (loss)	(14,130,000)	5,244,000	6,712,000
Depreciation	5,832,000	7,434,000	8,177,000
Amortization	1,382,000	1,283,000	1,181,000
Impairment of building	4,114,000
Stock-based compensation	404,000	362,000	251,000
Net long-term tax obligations	(256,000)	2,414,000	780,000
Deferred taxes	(6,888,000)	985,000	1,329,000
Income on equity method investment	(118,000)	(203,000)	(257,000)
Loss on disposal of building			89,000
Accounts receivable	2,774,000	(2,615,000)	(4,491,000)
Inventories	3,615,000	(6,185,000)	(7,526,000)
Other current assets	309,000	483,000	818,000
Other current liabilities	1,443,000	780,000	1,871,000
Postretirement benefit and pension obligations	15,833,000	(3,426,000)	2,073,000
Other	22,000	244,000	168,000
Net cash provided by operating activities	14,336,000	6,800,000	11,175,000
Additions to property, plant and equipment	(7,493,000)	(5,052,000)	(8,464,000)
Software development	(747,000)	(648,000)	(372,000)
Purchase of short-term investments		(45,000)	(107,000)
Proceeds from sale of short-term investments	7,621,000	201,000
Proceeds from sale of building			596,000
Net cash used in investing activities	(619,000)	(5,544,000)	(8,347,000)
Proceeds from borrowings	750,000	900,000	500,000
Short-term debt repayments			(425,000)
Long-term debt repayments	(2,202,000)	(2,148,000)	(4,529,000)
Proceeds from common stock issued	427,000	564,000	560,000
Repurchase of shares	(463,000)	(68,000)
Dividends paid	(2,806,000)	(2,795,000)	(2,775,000)
Net cash used in financing activities	(4,294,000)	(3,547,000)	(6,669,000)
Effect of translation rate changes on cash	(737,000)	(2,834,000)	319,000
Net increase (decrease) in cash	8,686,000	(5,125,000)	(3,522,000)
Cash beginning of year	11,108,000	16,233,000	19,755,000
Cash end of year	19,794,000	11,108,000	16,233,000
Interest paid	654,000	724,000	813,000
Taxes paid, net	$ 1,113,000	$ 2,169,000	$ 3,476,000