CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Operating activities:
Net income	$ 4,385	$ 9,298
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,168	3,089
Amortization of debt issuance costs and debt discount	1,432
Provision for doubtful accounts	(58)	25
Non-cash stock compensation	1,664	1,467
Deferred income taxes	1,405	477
Environmental remediation charge	170
Earnings on equity investment in joint venture	(325)	(109)
Changes in assets and liabilities:
Trade accounts receivable	9,141	(6,126)
Other receivables	464	1,051
Inventory	(6,105)	5,607
Prepaid expenses and other current assets	(978)	(1,153)
Other assets	(305)	106
Accounts payable	3,135	(5,821)
Accrued expenses and other liabilities	(6,543)	(4,937)
Net cash provided by operating activities	10,650	2,974
Investing activities:
Purchases of investments	(1,017)	(16)
Sales of investments		1,006
Payments for intangible assets	(1,594)	(6,450)
Purchases of property and equipment, net	(541)	(312)
Net cash used in investing activities	(3,152)	(5,772)
Financing activities:
Payment of cash dividends	(1,954)
Proceeds from exercise of stock options	185	115
Excess tax benefit on stock option exercises and restricted stock	437	820
Payment of contingent consideration		(1,500)
Borrowings of bank loans		10,500
Repayment of bank loans	(49)	(10,549)
Net cash used in financing activities	(1,381)	(614)
Effect of exchange rate changes on cash	197	222
Net increase (decrease) in cash	6,314	(3,190)
Cash and cash equivalents at beginning of period	66,828	34,020
Cash and cash equivalents at end of period	$ 73,142	$ 30,830