CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating activities:
Net income	$ 17,568	$ 11,436
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,225	5,973
Amortization of debt issuance costs and debt discount	691
Provision for doubtful accounts	(49)	211
Non-cash stock compensation	3,206	2,279
Deferred income taxes	(184)	(648)
Earnings on equity investment in joint venture	(748)	(1,342)
Changes in assets and liabilities:
Trade accounts receivable	9,021	(28,265)
Other receivables	2,041	(488)
Inventory	(10,418)	4,547
Prepaid expenses and other current assets	(400)	(1,086)
Other assets	(11)	1,129
Accounts payable	2,649	1,547
Accrued expenses and other liabilities	(13,323)	4,791
Net cash provided by operating activities	16,268	84
Investing activities:
Purchases of investments	(37)	(1,101)
Sales of investments	1,023
Payments for intangible assets	(9,850)	(940)
Purchases of property and equipment, net	(725)	(511)
Net cash used in investing activities	(9,589)	(2,552)
Financing activities:
Payment of cash dividends	(3,563)	(3,473)
Proceeds from exercise of stock options	384	955
Excess tax benefit on stock option exercises and restricted stock	1,030	660
Payment of contingent consideration	(1,500)	(1,500)
Proceeds from convertible senior notes	143,750
Payment for debt issuance costs	(5,153)
Proceeds from sold warrants	13,685
Purchase of call option (hedge)	(27,174)
Termination payment for interest rate swap	(420)
Borrowings of bank loans	15,500	7,000
Repayment of bank loans	(122,599)	(4,245)
Net cash provided by (used in) financing activities	13,940	(603)
Effect of exchange rate changes on cash	(290)	(2,610)
Net increase (decrease) in cash	20,329	(5,681)
Cash and cash equivalents at beginning of period	34,020	42,897
Cash and cash equivalents at end of period	$ 54,349	$ 37,216