CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities:
Net income	$ 16,926	$ 13,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,203	5,184
Provision for doubtful accounts	61	140
Non-cash stock compensation	1,353	881
Deferred income taxes	(268)	457
Earnings on equity investment in joint venture	(1,748)	(1,602)
Contingent consideration	2,840
Changes in assets and liabilities:
Investments-trading securities		475
Trade accounts receivable	(20,791)	(2,457)
Other receivables	(1,591)	1,964
Inventory	(1,576)	(6,036)
Prepaid expenses and other current assets	(790)	(659)
Other assets	617	607
Accounts payable	7,959	3,282
Accrued expenses and other liabilities	9,222	(5,403)
Net cash provided by operating activities	17,417	9,833
Investing activities:
Purchases of investments	(1,152)	(1,138)
Sales of investments	1,029
Payments received on notes receivable		350
Purchases of property and equipment, net	(902)	(692)
Payments for intangible assets	(563)	(726)
Net cash used in investing activities	(1,588)	(2,206)
Financing activities:
Payment of cash dividends	(4,481)	(2,661)
Proceeds from exercise of stock options	1,961	198
Excess tax benefit on stock option exercises and restricted stock	427	32
Payment of deferred consideration	(1,470)	(1,500)
Repayment of bank loans	(8,897)	(4,698)
Borrowings of bank loans	7,000
Net cash used in financing activities	(5,460)	(8,629)
Effect of exchange rate changes on cash	192	(1,051)
Net increase (decrease) in cash	10,561	(2,053)
Cash at beginning of period	24,862	28,664
Cash at end of period	$ 35,423	$ 26,611