CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating activities:
Net income	$ 23,446	$ 16,926
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,494	5,203
Provision for doubtful accounts	185	61
Non-cash stock compensation	2,416	1,353
Deferred income taxes	(224)	(268)
Earnings on equity investment in joint venture	(1,769)	(1,748)
Contingent consideration		2,840
Changes in assets and liabilities:
Trade accounts receivable	(8,861)	(20,791)
Other receivables	(516)	(1,591)
Inventory	(14,068)	(1,576)
Prepaid expenses and other current assets	(596)	(790)
Other assets	1,332	617
Accounts payable	8,110	7,959
Accrued expenses and other liabilities	(1,863)	9,222
Net cash provided by operating activities	13,086	17,417
Investing activities:
Payment for net assets of business acquired, net of cash acquired	(228)
Purchases of investments	(101)	(1,152)
Sales of investments	501	1,029
Payments for intangible assets	(662)	(563)
Purchases of property and equipment, net	(709)	(902)
Net cash used in investing activities	(1,199)	(1,588)
Financing activities:
Payment of cash dividends	(5,115)	(4,481)
Proceeds from exercise of stock options	3,162	1,961
Excess tax benefit on stock option exercises and restricted stock	1,586	427
Payment of deferred consideration	(1,500)	(1,470)
Borrowings of bank loans	8,000	7,000
Repayment of bank loans	(17,665)	(8,897)
Net cash used in financing activities	(11,532)	(5,460)
Effect of exchange rate changes on cash	797	192
Net increase in cash	1,152	10,561
Cash at beginning of period	33,231	24,862
Cash at end of period	$ 34,383	$ 35,423