CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
OPERATING ACTIVITIES:
Net income (loss)	$ 13,382	$ 4,018	$ (240)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	6,198	5,735	4,976
Deferred income tax expense	783	1,082	2,850
Share-based compensation	1,477	2,162	1,824
Tax (benefits) shortfall on stock options exercised	(240)		53
Loss (gain) on sale of assets	(111)	(4)	22
Loss (gain) on investment securities	(699)	103	(206)
Grant income			(410)
Other noncash expenses	16	15	20
Changes in assets and liabilities which provided (used) cash:
Trade accounts receivable	173	(6,285)	2,775
Inventories	(5,467)	(161)	(7,845)
Income taxes receivable / Income taxes payable	2,514	1,516	(5,116)
Prepaid expenses and other assets	317	(110)	168
Accounts payable	4,679	(389)	2,007
Accrued expenses	(234)	1,176	(1,710)
Accrued payroll and payroll related	3,712	2,263	(5,370)
Net cash provided by (used in) operating activities	26,500	11,121	(6,202)
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(7,788)	(5,237)	(7,254)
Proceeds from sale of property, plant and equipment	279	7	9
Proceeds from sale of investment securities	22,456	35,910	9,750
Purchase of investment securities	(23,550)	(23,301)	(28,153)
Net cash provided by (used in) investing activities	(8,603)	7,379	(25,648)
FINANCING ACTIVITIES:
Proceeds from the issuance of debt			5,056
Repayments of debt	(647)	(661)	(4,954)
Deferred financing fees			(26)
Proceeds from public stock offering			14,950
Proceeds from issuance of stock	3,083	272	501
Tax benefits (shortfall) on stock options exercised	240		(53)
Purchase of treasury stock	(440)	(722)	(221)
Distribution to noncontrolling interest	(22)	(19)	(10)
Net cash provided by (used in) financing activities	2,214	(1,130)	15,243
Effect on cash and cash equivalents of changes in foreign exchange rates	16	(85)	(12)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	20,127	17,285	(16,619)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	22,562	5,277	21,896
CASH AND CASH EQUIVALENTS, END OF PERIOD	42,689	22,562	5,277
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Interest paid	251	272	272
Income taxes paid	$ 4,006	$ 1	$ 1,809